Entypoo (ἐντυπόω) means to carve into or engrave upon — to make a lasting impression in a surface. Crucially, it appears in 2 Corinthians 3:7 in Paul's contrast between the two covenants: the Mosaic ministry that came 'engraved [entypoo] in letters on stone' versus the ministry of the Spirit written on human hearts. The word directly recalls Exodus 32:16 where the tablets were 'inscribed by God' — and now Paul transfers that metaphor from stone to the living heart.
The contrast Paul draws using entypoo is one of his most profound covenant theology passages. The old covenant was glorious — it was God's own handiwork, engraved on stone tablets. But it was external, imposed from outside. The new covenant glory surpasses it precisely because the Spirit now engraves God's law on the heart itself (Ezekiel 36:26-27; Jeremiah 31:33). The same divine artistry that cut letters into stone now cuts into the human spirit — the difference being that living stone, unlike dead stone, can respond, obey, and love.