2 Corinthians 3:2-4

New Catholic Bible

² You yourselves are our letter, one that is written on our hearts, so that it may be known and read by all. ³ And you make it clear that you are a letter from Christ entrusted to our care, a letter written not with ink but with the Spirit of the living God, and written not on tablets of stone^[a] but on tablets of the human heart.

⁴ Such is the complete confidence in God that we have through Christ.