Open Theism and Isaiah 46: Does God Change His Mind?
Short answer: Open theism teaches that God does not know the future exhaustively because a genuinely free creation makes some of it unsettled, and that He therefore changes His mind as events unfold. Isaiah 46:9-10 speaks directly to that claim: God summons His people to remember what He has already done and declares that He is God and there is no other, grounding confidence in what He will yet do. The passage does not say God fails to know the future; it says the opposite, that His counsel stands and He accomplishes what He pleases. Passages about God relenting are real and must be handled honestly, but they describe His response to human repentance within His settled purpose, not a defeat of His knowledge. This article examines what Isaiah 46:9-10 does and does not establish, and why the distinction matters pastorally.
What open theism actually claims
Open theism is not a single slogan but a family of proposals about God's relationship to time and to free creatures. Its central claim is that God knows everything that can be known, but that future free decisions cannot be known in advance as definite facts because they are not yet settled. On this view, God is not ignorant or careless; He is, in the words of the position, wonderfully resourceful, anticipating possibilities and responding as history unfolds. Everything else in the system follows from that move: if the future is partly open, then God's plans are partly flexible, and statements about God repenting become straightforward descriptions of real change in God rather than anthropomorphic accommodation to human language.
Advocates argue that this picture makes prayer more meaningful, makes human responsibility more real, and makes texts about God changing His mind honest rather than embarrassing. They point to instances where God said He would do something and then did not, and they argue that a classical doctrine of exhaustive foreknowledge turns those narratives into theatre. It is worth acknowledging that open theists are often asking a serious pastoral question: how can my choices matter to God if everything is already fixed? That question deserves an answer. But answering it well requires us to test the proposed solution against the text, not only against our intuitions about freedom.
Where classical theology responds is not by denying that God responds to people, but by denying that God's knowledge is limited by created decisions. On the classical account, God's foreknowledge does not coerce the will any more than my knowing that a friend will keep a promise forces him to keep it. God knows free acts because He is outside the sequence that makes them free, not because He overrides them. The debate, then, is not whether God is personal and responsive. Both sides affirm that. The debate is whether God's knowledge and purpose are exhaustively settled. Isaiah 46 is one of the places where that question is put directly to the people of God.
Isaiah 46:9-10 in its setting
Isaiah 46 sits in a long oracle against Babylon and its idols, and the surrounding chapters are relentless in their contrast between Yahweh and the gods of the nations. The chapter opens with Bel and Nebo, Babylon's deities, being loaded onto beasts and carried into captivity. Idols must be hauled around; Yahweh carries His people. Against that backdrop comes the call to remember. Isaiah 46:9 says, "Remember the former things of old: for I am God, and there is no other. I am God, and there is none like me." The command is not to speculate about God's inner experience but to recall what He has done, because His past action is the evidence for who He is.
The next verse gives the reason that remembering matters. God declares the end from the beginning, and from ancient times things that are not yet done, saying that His counsel will stand and He will do all His pleasure. That is the claim open theism cannot absorb without qualification. If the future is genuinely unsettled in the way open theism proposes, then there are not-yet-done things for God to declare, at least not in the way Isaiah describes. Yet the text says God announces from ancient times what is not yet done, and He does so because His purpose will stand. The ground of Israel's hope is not that God is a fast improviser but that He has spoken, and what He has spoken will come to pass.
This is the difference between confidence and guesswork. A God who knows all possibilities but no settled future can still make promises, but He cannot guarantee them in the way Isaiah guarantees them. The prophecy is not a forecast with an asterisk; it is a declaration that the counsel of Yahweh stands. When the exiles in Babylon wondered whether the God of Israel had been defeated by Marduk, the answer was that Yahweh had named Cyrus long before Cyrus existed and would accomplish His purpose through him. That kind of prophecy only works if the future is known and ruled, not merely anticipated. The chapter's pastoral force depends on it.
The God who announces the end from the beginning
Isaiah 41:22-23 puts the challenge to the idols in the form of a test: let them declare what is to come, so that we may know they are gods. Foretelling is presented as a divine prerogative, and the whole polemic of Isaiah 40-48 runs on that contrast. The idols cannot predict; Yahweh can. If foretelling is the mark that distinguishes Yahweh from the nations' gods, then scaling it back to probability and guesswork collapses the argument. The point is not that God is very good at anticipating trends. The point is that no other being can announce events before they occur, and Yahweh does so repeatedly through Isaiah.
Notice the grammar of Isaiah 46:10. It is not merely that God knows what will happen; it is that His counsel will stand and He will do all His pleasure. Knowledge and purpose are joined. God is not a spectator with an accurate weather chart of human decisions; He is the one whose intention drives history to its appointed end. That is why the text moves so quickly from past to future. Remembering the former things leads to confidence about things not yet done, because the same God is at work in both. His past faithfulness is the guarantee of His future faithfulness, and both rest on His unchanging character.
This is where Isaiah 46 touches the New Testament's own claims about God. James 1:17 says, "Every good gift and every perfect gift is from above, coming down from the Father of lights, with whom can be no variation, nor turning shadow." The God who gives good gifts is the God who does not shift. Malachi 3:6 says, "For I, Yahweh, don't change; therefore you, sons of Jacob, are not consumed." The constancy of God is not an abstract attribute; it is the mercy that keeps a stubborn people from being destroyed. If open theism is right that God's intentions and knowledge genuinely change with human decisions, these texts need a great deal of explaining. The simplest reading takes them at face value: God remains who He is.
How to read the passages about God relenting
Any honest treatment has to face the texts where God is said to change His mind. Numbers 23:19 is one of the strongest: "God is not a man, that he should lie, nor a son of man, that he should repent. Has he said, and will he not do it? Or has he spoken, and will he not make it good?" Notice the context. Balaam has been hired to curse Israel, and he is explaining why the curses will not come. God had blessed, and no divination or sorcery could reverse it. The statement about God not repenting is not an isolated philosophical claim; it is the reason Israel can trust that God's blessing will not be revoked by an enemy's ritual.
1 Samuel 15:29 makes a similar move at a different point. Samuel tells Saul, after Saul's rejection, "Also the Strength of Israel will not lie nor repent; for he is not a man, that he should repent." A few verses earlier, in 1 Samuel 15:11, God says He regrets making Saul king. The same chapter holds both. That should tell us the language of regret is accommodational and relational, describing God's grief over Saul's rebellion, while the declaration that God does not repent like a man is the theological anchor. The text itself gives us a norm and a description, and it expects us to read the description in light of the norm rather than the reverse.
Jonah 3:10 offers another well-known instance: God saw the Ninevites turn from their evil and He relented of the disaster He had announced. Here the repentance of a city is met by God's mercy, and the threatened judgment is withdrawn. In Jeremiah 18:7-8, God states the principle explicitly: if a nation He has spoken against turns from its evil, He will relent of the disaster. That is not God being caught off guard. It is God announcing in advance how He will respond to repentance. The conditional structure is part of the message, not a workaround for it. God's settled character expresses itself in mercy toward the repentant.
Psalm 139 and the depth of divine knowledge
Psalm 139 is often cited in this discussion because it describes a knowledge that is total and inescapable. The psalmist confesses that Yahweh has searched him and knows him, knows when he sits and rises, discerns his thoughts from far away, and is acquainted with all his ways. The psalm continues with the remarkable line that God knows the psalmist's words before they are on his tongue. Whatever else this establishes, it establishes a knowledge of a person that precedes his own self-expression. It is difficult to reconcile this with a God whose knowledge of my next free choice is only a set of possibilities until I act.
The psalm does not specifically say God exhaustively foreknows the entire future. It says He knows the psalmist deeply and is present everywhere. We should be careful not to overclaim what a passage teaches. But the direction of the psalm matters: God's knowledge is not limited by what the creature has already revealed. He knows from far off. He knows before speech. This is the God Isaiah calls His people to remember, and it is the God to whom the psalmist says that such knowledge is too wonderful for him, too high to attain. The psalm ends in awe, not in a tidy philosophical system, and that posture is itself instructive for this debate.
Open theism's strongest appeal is usually not exegetical but pastoral: it claims to preserve the genuineness of relationship. But the psalmist does not experience exhaustive knowledge as a threat to relationship. He experiences it as the ground of being known. To be searched and known by a God who knows even the words before they come is not to be reduced to a puppet; it is to be fully seen. That is worth saying plainly, because some who are drawn to open theism are drawn by a fear that classical theology makes prayer pointless. Psalm 139 suggests the opposite: it is precisely because God knows us utterly that His presence and guidance are trustworthy.
Why this matters for prayer and providence
The practical stakes are easy to underestimate. If God does not know the future exhaustively, then His promises about the future are not certainties but intentions that depend on creaturely cooperation. Consider the promise that God will complete the good work He began, or that all things work together for good, or that Christ will return. On an open view, none of these is guaranteed in advance; they are God's settled purpose, but the path is genuinely uncertain in ways He cannot foresee. The believer's comfort, then, shifts from the reliability of God's word to the reliability of God's resourcefulness. That is a real difference in how hope functions, and it is not a small one.
Isaiah 46:9-10 is written to a people who needed certainty. The exiles in Babylon had seen their temple destroyed and their nation humbled. The idols of the empire looked triumphant. What God offers them is not a God who will adapt well, but a God who announced the end from the beginning. Their hope rests on the fact that what He has spoken, He will do. The specific prophecy of Isaiah 45 naming Cyrus is the proof case. No open future can generate that kind of specificity. This is why the passage is so often at the center of the debate, and why it should be read in full rather than in fragments.
There is a second practical matter: theodicy and prayer for the future. When we pray for a wayward child, a sick friend, or a nation in crisis, we do not simply ask God to manage possibilities. We ask the God who knows the end to bring about His good purpose. The confidence that He can do so, even through decisions we cannot predict, is a different kind of comfort than the assurance that He will do His best with what happens. Both are real, but only one matches the Bible's own language of counsel standing and pleasure being accomplished. This is a place where the doctrinal difference shows up in how we pray.
Where faithful Christians differ
It is important to be honest here. Some who reject open theism still hold views that try to preserve a robust sense of divine responsiveness, and they differ among themselves on how to explain the relenting texts. Others have defended a middle position according to which God voluntarily chooses not to know some things, though this is not the same as saying they cannot be known. Christians who agree on Isaiah 46's central claim often disagree on how to reconcile it with passages like 1 Samuel 15 or Jonah 3. This is not a sign that the Bible is unclear on its main point; it is a sign that the details require care.
What should be said is that open theism as a system is a departure from the historic Christian reading of Isaiah 46, not merely a minor variation. The church has consistently confessed that God's knowledge and decree are not dependent on creaturely decisions in the way open theism requires. That does not mean open theists are not Christians, and it does not license caricature or contempt. It means the position should be weighed by the texts, and the texts have weight. Isaiah 46 asks us to remember what God has done and to trust what He has said, precisely because there is none like Him. That is still the pastoral center of the passage.
Biblical fidelity check
What Isaiah 46:9-10 does establish is that God is unique among all claimants to divinity, that His knowledge and purpose reach from the beginning to the end, and that His counsel stands. What it does not do is spell out a full technical doctrine of foreknowledge or provide a philosophical account of how divine knowledge and human freedom relate. It also does not claim that God is emotionally distant or unmoved. The passage is a summons to remember and trust, and its logic is that the God who acted in the past is the God who will act in the future because there is none like Him.
A common misreading is to treat the relenting passages as if they cancelled Isaiah 46, so that God's predictions become guesses and His promises become possibilities. That is wrong because Scripture gives us the norm that God does not lie or repent as a man repents, and then describes His grief and mercy in human terms. Reading the descriptive passages as corrections to the normative ones inverts the Bible's own order. The right reading holds both: God genuinely responds to repentance, and His counsel stands. If that seems like tension, it is the tension the text itself maintains, and we should not resolve it by shrinking God.
Other passages that speak to Isaiah 46:9-10
Several companion studies help fill out this theme. 1 Samuel 1: Hannah's Prayer and Samuel's Birth shows God acting in response to prayer and opening a closed womb. 1 Samuel 10: Samuel Anoints Saul and Signs Confirm demonstrates God revealing what is to come through a prophet. 1 Samuel 11: Saul Rescues Jabesh Gilead and Renews Kingdom shows God using human action to accomplish deliverance. And 1 Samuel 12: Samuel's Farewell and Israel's Demand for a King weighs the consequences of the people's choice alongside God's enduring purpose. Together they show divine purpose and human responsibility operating in the same history.
Frequently asked questions
Does open theism deny God's omniscience?
Most open theists say no. They argue that God knows everything that can be known, but that future free choices cannot be known as settled facts because they have not happened. The disagreement is therefore not whether God is all-knowing but what there is for Him to know. Classical theology replies that God's knowledge is not limited by the creature's timeline, and that Isaiah 46:10 describes God declaring what is not yet done. The question is whether that declaration is genuine foreknowledge or something weaker.
What does it mean that God does not repent?
Numbers 23:19 says God is not a man that He should lie or repent, and 1 Samuel 15:29 says the Strength of Israel will not lie nor repent. The point is that God does not change His fundamental commitments or break His word the way humans do. When Scripture elsewhere says God relented or regretted, it describes His real response to human rebellion or repentance without implying that His character or ultimate purpose shifted. The Bible gives us both kinds of language and expects us to read them together, not to set one against the other.
How can God know the future if people choose freely?
Scripture does not explain the mechanics, and we should be humble about what we cannot map out. What it does assume is that God's foreknowledge and human responsibility coexist. Joseph's brothers acted wickedly, yet God intended it for good, and Peter can say Jesus was delivered up by the determined plan of God while also charging his hearers with the deed. The Bible does not treat this as a contradiction to be resolved, but as two truths that hold together, and it calls us to trust the God who knows the end from the beginning.
