2 Corinthians 3:2-3  You yourselves are our letter of recommendation, written on our hearts, to be known and read by all. And you show that you are a letter from Christ delivered by us, written not with ink but with the Spirit of the living God, not on tablets of stone but on tablets of human hearts.

We don't write letters too much anymore, but in the early Church, handwritten letters were the only way to receive information from a great distance. The epistles were originally simply letters from one friend to another group of friends, talking about the life of faith in Christ. Today these letters are studied and valued for their importance in guiding our lives as Christians.

Letters were so important to the early church that Paul refers to those who receive his actual letter as letters themselves. We, too, as recipients of Paul's letters, are letters. We are not letters written with ink that fades, but we are written with the Spirit of the living God. We have vibrancy and force that will last forever. We are not written on cold and unfeeling stone. We are letters written on beating human hearts that supply lifeblood to the world.
--Helping people live life with Jesus everyday,