'Ink' in the Bible

It is clear that you are Christ’s letter, produced by us, not written with ink but with the Spirit of the living God—not on stone tablets but on tablets that are hearts of flesh.

Though I have many things to write to you, I don’t want to do so with paper and ink. Instead, I hope to be with you and talk face to face so that our joy may be complete.

I have many things to write you, but I don’t want to write to you with pen and ink.