We couldn’t be surer of ourselves in this—that you, written by Christ himself for God, are our letter of recommendation. We wouldn’t think of writing this kind of letter about ourselves. Only God can write such a letter. His letter authorizes us to help carry out this new plan (Covenant) of action. The plan (Covenant) wasn’t written out with ink on paper, with pages and pages of legal footnotes, killing your spirit. It’s written with Spirit on spirit, his life on our lives! 
2 Corinthians 3:4-6 Message Bible