'Ink' in the Bible

You are demonstrating that you are the Messiah's letter, produced by our service, written not with ink but with the Spirit of the living God, not on tablets of stone but on tablets of human hearts.

Although I have a great deal to write to you, I would prefer not to use paper and ink. Instead, I hope to come to you and talk face to face, so that our joy may be complete.

Although I have a great deal to write to you, I would rather not write with pen and ink.