2 Corinthians 3:3-5

Young's Literal Translation

³ manifested that ye are a letter of Christ ministered by us, written not with ink, but with the Spirit of the living God, not in the tablets of stone, but in fleshy tablets of the heart,

⁴ and such trust we have through the Christ toward God,

⁵ not that we are sufficient of ourselves to think anything, as of ourselves, but our sufficiency [is] of God,