Breadth Length Height Depth: Ephesians 3 Prayer Explained
Short answer: In Ephesians 3:14-19 Paul bows his knees before the Father and prays that believers, rooted and grounded in love, would be able to comprehend with all the saints what is the breadth, length, height, and depth, and to know the love of Christ that surpasses knowledge. The four measurements are not four separate doctrines but one vast reality: the love of Christ, which has no boundary a believer can reach the edge of. The purpose of the prayer is not curiosity satisfied but fullness received, that you may be filled with all the fullness of God. Paul does not ask for comfort, health, or success. He asks for inner strength, settled love, and a knowledge that goes beyond knowing.
Paul's posture: knees bowed before the Father
The prayer begins with a gesture. Paul writes in Ephesians 3:14, For this cause, I bow my knees to the Father of our Lord Jesus Christ. It is a rare detail. Jewish prayer commonly stood, and bowing the knees was reserved for moments of particular intensity. Paul is not performing; he is overwhelmed. The cause he names reaches back to the previous chapter, where Jew and Gentile have been made one body through the cross. The unity of the church is not a policy he is recommending but a reality he is praying about.
Notice also the address: to the Father of our Lord Jesus Christ. This is not a vague deity but the Father who has revealed himself in the Son and who has adopted believers as children. Everything Paul asks for in the next verses is possible only because the Father has a family. He is not asking a distant judge for a favor. He is asking a Father for what belongs to the household. That single line changes the tone of the entire prayer, and it should change how we read every request that follows.
Paul is in prison when he writes this letter, yet the posture of his heart is not bitterness but intercession. He does not ask God to open the prison door. He asks God to strengthen the church in its inner being. That is a rebuke to our instinctive prayers. We tend to pray about circumstances; Paul prays about the person. We ask that the trial be removed; he asks that the believer be filled. The knees are bowed, but the request is not for escape. It is for depth.
There is also a caution here about how we speak of prayer. Paul does not present this as a formula for guaranteed results, and he does not claim that everyone who prays this way will feel something dramatic. He prays, and he trusts the Father to answer according to his will. Christian prayer is not a technique for producing experiences. It is a conversation with a Father who knows better than we do what his children need. The posture is humility; the confidence is in the one addressed, not in the one praying.
Strength in the inner man before any comprehension
The first specific request is in verse 16: that God would grant you, according to the riches of his glory, that you may be strengthened with power through his Spirit in the inward man. Notice the order. Before Paul asks for comprehension, he asks for strength. Before he asks for knowledge, he asks for the inner person to be fortified. The four dimensions are not something a believer grasps by raw intellect. They are grasped by a person who has first been strengthened from within by the Spirit of God.
The phrase according to the riches of his glory sets the measure. Paul does not ask according to the poverty of the believer. He asks according to the wealth of God. If the request were measured by our capacity, it would be small. Measured by God's glory, it is enormous. This is a pattern Paul uses repeatedly in his prayers. He asks big things because he is asking a big God. He does not lower the request to match the prayer's confidence; he raises the request to match the giver's resources.
The inner man is not a mystical inner self that exists apart from ordinary life. It is the person as renewed by the Spirit, the seat of will, affection, and conviction. A believer can be outwardly strong and inwardly hollow. Paul knows this danger. So he prays for the hidden place first. A church can have impressive programs and still be weak inside. A Christian can have a public testimony and still be running on empty. The prayer for inner strength is not a luxury; it is the foundation of everything else Paul asks.
This also tells us something about how God ordinarily works. He does not usually bypass means; he strengthens through the Spirit, and the Spirit uses Scripture, prayer, and the fellowship of the saints. So the prayer does not make us passive. It makes us dependent. We read, we pray, we gather, and we do so asking the Father to do what only he can do. The strength is his; the means are ordinary. Both are true, and Paul holds them together without embarrassment.
Rooted and grounded in love
Verses 17 and 18 move to the next request: that Christ may dwell in your hearts through faith; that you, being rooted and grounded in love, may be strong to comprehend with all the saints. Two images carry the weight. Rooted is agricultural, the language of a tree drawing life from soil it cannot see. Grounded is architectural, the language of a foundation that holds a building steady. Both images describe a life that is settled before it is explored. The dimensions of Christ's love are not discovered by people who are still anxious about whether they belong.
This is why the order matters so much. Many believers try to comprehend the love of God while doubting whether they are loved at all. They study the doctrine while questioning their standing. Paul does not do that. He assumes the rooting. He assumes the foundation. The comprehension is for people who are already planted. If you are in Christ, your place is not the question. The question is how far the love that holds you actually extends. You are not investigating a rumor; you are surveying your own inheritance.
The phrase with all the saints is important. The dimensions are not a private revelation for a special class of Christian. They are comprehended together, in the church, across generations and cultures. No single believer sees the whole. One sees the breadth, another the depth. The congregation sees more than the individual, and the church through history sees more than the congregation. This is a corrective to the lone-wolf spirituality that treats depth as something achieved in isolation. Paul prays for a corporate comprehension.
Christ dwelling in the heart through faith is also a statement about union, not merely presence. The believer is not a container holding a distant guest. The language is intimate and permanent. And the love in view is not the believer's love for God, which fluctuates, but God's love in Christ, which does not. If the rooting depended on the intensity of our affection, it would fail. It depends on his. That is the only reason a foundation can be called sure.
The four dimensions: breadth, length, height, depth
Paul then names the measurements: what is the breadth and length and height and depth. Jewish literature used this kind of fourfold phrasing to describe totality, the way we might say from every side. Paul is not giving four separate doctrines but one love described from every angle. Breadth reaches out to all peoples, including the Gentiles Paul has just spent two chapters defending. Length stretches across generations, from Abraham to the end of the age. Height rises to the throne of God. Depth descends to the lowest human need, to the grave and beyond.
If the four dimensions are the love of Christ, then none of them can be exhausted. You can walk the breadth and never reach its edge. You can follow the length and never reach its end. You can climb the height and never reach its summit. You can sound the depth and never reach its floor. That is the point. The prayer is not that we would measure the love but that we would be overwhelmed by its immeasurableness. Paul prays for an experience of scale, not for a chart of quantities.
It is also worth saying that the dimensions are not an invitation to boast of secret knowledge. Paul is writing to ordinary believers in a city he knows well. He wants them to know they are loved beyond what they can calculate. Some Christians turn this passage into a spiritual elite, as if only advanced believers get the four dimensions. Paul does the opposite: he prays that every believer would comprehend them with all the saints. The greatest depths are for the least impressive members of the body.
Nor are the dimensions an invitation to self-focus. The question is not how deep my feelings run but how far his love reaches. That difference protects us from measuring the Christian life by emotional intensity. There are seasons when a believer feels nothing and is still held by the same love. There are seasons of joy when the love feels obvious. Neither season changes the dimensions. The love was there before you felt it, and it will be there after the feeling passes.
To know the love that surpasses knowledge
Verse 19 contains what looks like a contradiction: to know the love of Christ which surpasses knowledge. If it surpasses knowledge, how can it be known? The answer is that Paul uses the word in two senses. There is a knowledge that is mere information, and there is a knowledge that is personal and experiential. The love of Christ surpasses the first and is grasped by the second. You do not master it; it masters you. You do not contain it; it contains you. The knowing Paul asks for is the knowledge of being known, loved, and held.
This is why the prayer cannot be reduced to a doctrine exam. You can pass the exam and miss the point. A person can state the doctrine of God's love accurately and still live as though God were an adversary. Paul prays against that disconnect. He asks that the truth would land in the affections, that the heart would catch up to the confession. It is possible to be theologically correct and emotionally orphaned, and this prayer is the remedy. Not by rejecting truth, but by letting truth reach the place where we actually live.
The love that surpasses knowledge is also the love that sets limits on our despair. If the love can be measured, then there is a point at which you can outrun it. Paul says there is no such point. The dimensions have no edge. This does not mean that every path we choose is blessed or that the love of Christ excuses sin; the same letter speaks plainly about putting away the old self. It means that no failure, no grief, no season of doubt is beyond the reach of his love. The depth is deeper than your lowest point.
And the knowledge is not a one-time attainment. It is a river to wade into, deepening with each year. A believer of forty years knows the love better than a new convert, and yet also knows how much remains, which is the paradox of real knowledge of God. The more you see, the more you see there is more. That is not frustration; it is the joy of an inexhaustible subject. We will spend eternity exploring dimensions that never end.
Filled with all the fullness of God
The prayer ends with its most staggering request: that you may be filled with all the fullness of God. Not a portion, not a foretaste, but fullness. This is the language of Ephesians 1 and 4, where the church is called the body of him who fills all in all. The same fullness that fills Christ is the fullness Paul asks God to give the church. It is not that believers become divine; that would be a different religion. It is that the Spirit conforms us to Christ until his character, his love, and his life are formed in us.
This is the true goal of the four dimensions. We do not pursue depth so that we can congratulate ourselves on our profundity. We pursue it so that Christ may be formed in us, so that the body may grow into its head. Depth that produces pride is not the depth Paul prayed for. Depth that produces love, humility, and obedience is. Paul gives a test for every claim of spiritual insight, and the test is whether it makes you more like the one who washed feet and went to a cross.
Notice also that Paul asks for this for a church, not merely for individuals. The fullness of God filling a gathering is a corporate reality. A congregation where each member is filled and each member is rooted becomes something more than the sum of its parts. That is the mystery Paul keeps returning to: Gentiles brought near, strangers made fellow citizens, a dwelling of God in the Spirit. The four dimensions are the dimensions of a house that God himself occupies, and he does not occupy it partially.
Finally, the doxology that follows, to him be the glory in the church and in Christ Jesus to all generations, tells us where all of this is headed. The prayer does not terminate on us. It terminates on the glory of God. When a believer comprehends the breadth, length, height, and depth, the proper response is not a longer list of achievements but a deeper doxology. We are loved so that we might adore. We are filled so that he might be glorified. That is the direction of the whole passage.
How this prayer confronts shallow Christianity
Most of us pray small prayers. We ask for better circumstances, resolved conflicts, and open doors. Those things are not wrong, but they are provisional. Paul's prayer is not provisional. It asks for something that cannot be lost. If the Father gave you nothing else in your lifetime, having the love of Christ rooted and known would be enough. That is not a denial of earthly needs; it is a ranking of them. The woman at the well was offered water that would end her thirst forever, and she left her water jar behind.
Shallow Christianity is not usually obvious. It looks like a packed schedule, a clean testimony, a set of correct opinions. What it lacks is the inner man strengthened, the roots in love, and the knowledge that surpasses knowledge. These things are not produced by more meetings or more information. They are the fruit of the Spirit working in a heart that asks. That is why the prayer is such a gift: Paul, in prison, says what we should have been saying all along and did not know how to say.
There is also a warning here against substituting experiences for the thing itself. Some chase emotional highs and mistake them for depth. Others chase learning and mistake information for transformation. Paul holds both together: the Spirit strengthens, understanding enlarges, love settles, and God fills. None of these is a manufactured state. All of them are gifts asked for and received in ordinary faith. The prayer is a safeguard against hype in either direction, because it asks God to do what we cannot stage.
So what do you do with a prayer like this? Say it. Slowly. For yourself, for your family, for your church, for the people you find hardest to love. Ask the Father to strengthen your inner being, to root you in the love of Christ, to stretch your understanding of dimensions that never end, and to fill you with his fullness. Do not expect fireworks. Expect depth, which usually grows quietly, like a tree, and then one day you look up and see how far the branches have spread.
Biblical fidelity check
What this passage establishes is that Paul prays for the Father to strengthen, root, and fill believers, and that the love of Christ has dimensions beyond human measurement. It does establish that the knowledge of that love is possible, that it is corporate as well as personal, and that the goal is the fullness of God. It does not establish that the four words are four separate stages, four power zones, or a map of the spiritual realm. That reading imports later speculation into Paul's plain meaning.
A common misreading treats breadth, length, height, and depth as code for hidden mysteries reserved for elite believers. Paul explicitly prays that all the saints comprehend them, which contradicts any class of insiders. Another misreading turns the prayer into a claim that he prays for wealth, health, and personal success; the text asks for inner strength and spiritual fullness. The correct reading keeps Paul's pastoral goal in view: a church that knows itself loved and lives accordingly.
Other passages that speak to Ephesians 3:14-19
Paul's concern for believers who have not seen his face runs through the letter, as in Colossians 2:1, where he describes a struggle for those he has never met. The greatness of that love is declared in Romans 8:38-39, where nothing in creation can separate us from it. Jesus himself prays for the unity of all who would believe, in John 17:20-23. And the purpose of this love is a people built together into a dwelling of God, as Ephesians 2:19-22 describes. For related studies see What Does 1 John 1:8 Mean? Context, Theology, and Application, 1 John 1:9 Meaning: Confession, Forgiveness, and Cleansing, What Does 1 John 2:15 Mean? Context, Theology, and Application, and What Does 1 John 1:1 Mean? Context, Theology, and Application.
Frequently asked questions
What do the breadth, length, height, and depth mean in Ephesians 3?
They describe the love of Christ from every direction, a totality that cannot be exhausted. The breadth reaches all peoples, including Gentiles. The length stretches across generations. The height rises to God's throne. The depth reaches the lowest human need. Paul is not giving four separate doctrines but one immeasurable love, and the point is that no direction takes you past its edge. The prayer is that believers would comprehend this together with all the saints, not as a private revelation.
If Christ's love surpasses knowledge, how can Paul pray that we know it?
Paul uses knowledge in two senses. One is information about something; the other is personal knowledge of being loved. The love of Christ surpasses the first but is grasped by the second. You do not master it; it masters you. This is why the prayer cannot be reduced to passing a doctrine exam. A person can state the truth accurately and still live as though God were distant, and Paul prays against that very disconnect.
What does it mean to be filled with all the fullness of God?
It means the Spirit conforms believers to Christ until his character and life are formed in them. It does not mean believers become divine. The same fullness that fills Christ is given to his body, the church, so that a community of ordinary people reflects him. This is the goal of the four dimensions. Depth that produces pride is not the depth Paul prayed for; depth that produces love, humility, and obedience is.
