Why does God seem different in the Old and New Testaments?

Quick answer

He isn’t different. The same God of love, justice, mercy, and holiness is on every page — but the cross brought into the open what was always there, and our shallow readings of either Testament cause the apparent contrast.

Read the Old Testament carefully and you find God’s patience, mercy, and steadfast love everywhere — the very words "the LORD is gracious and compassionate, slow to anger, abounding in love" come from there.

Read the New Testament carefully and you find God’s holiness and judgment in full — Jesus speaks of hell more than anyone, and Revelation is fierce.

God did not change between Testaments; the cross simply revealed what was already true. The Old Testament builds the bow of the story; the New Testament shoots the arrow — both about the same God who loves the world.

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Original BibleDawn answer · reviewed 2026-06. Drafted with AI assistance and reviewed for accuracy.