Matthew 5:27–30: Lust, the Heart, and Self Control
Jesus does not soften the command against adultery; he moves it inward, to the gaze that fuels desire. Matthew 5:27–30 treats purity of heart as a matter of judgment-day seriousness.
James 1:19–20: Slow to Anger, Slow to Speak
James 1:19–20 treats anger as a response to be slowed and governed, not a feeling to be indulged. The test is what anger produces: whatever does not yield God's righteousness must be put away.
Jesus Tempted in the Wilderness: Self Control
Jesus faced real temptation in the wilderness and refused to act independently of God's word. His self control was not grim willpower but settled allegiance to the Father.