2 Corinthians 3:2-3

2You yourselves show that we have done good work. You are like a letter that is written on our lives. Everybody can read that letter and they can understand it.

3It is clear that you are a like a letter that Christ himself has written. We are the people who brought God's message to you. Now people see what God has done in your lives. That is like a letter that they read. But it is not a letter written on paper with ink. It is the Spirit of the living God who wrote it. He did not write it on pieces of stone. Instead, he wrote it deep inside you.