2 Corinthians 3:3

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. [Do we need an epistle to any one? Surely not while you exist as a church which we have founded, for ye are our epistle copied by the hand of love in our hearts, so that everywhere we go your conversion vouches for us, that we are true messengers of God. For as men learn of you, either by acquaintance with you as the original epistle, or from what our own heart's copy holds recorded about you, it becomes manifest to them that ye are an epistle of which Christ is the author and dictator; of which I am the amanuensis, or earthly penman; of which the fleshly tables of the heart--the very sources of life itself--are that which receives and holds the message; and the Holy Spirit, the means employed to convey, impress, and make abiding the message. All men, seeing your transformed lives, read you as such an epistle; and as ye are my fruit in the Lord, so they need no other commendation of me (Matthew 7:16). The presentation of life under the figure of a writing was familiar to Old Testament readers (Ezekiel 36:26; Jeremiah 31:33; Proverbs 3:3; Proverbs 7:3). Some have thought that Paul uses the contrast between stone and heart as a reference to Ezekiel 36:26; but his use of the word "tables," and the context, forbids such a reference. Paul has the tables of the law in mind, and introduces the idea here that he may lead up to the comparison which begins at 2 Corinthians 3:6]