2 Corinthians 3:1-3

Are we beginning again to commend ourselves? or need we, as do some, epistles of commendation to you or from you? Ye are our epistle, written in our hearts, known and read of all men; being made manifest that ye are an epistle of Christ, ministered by us, written not with ink, but with the Spirit of the living God; not in tables of stone, but in tables that are hearts of flesh.