2 John 1:12
Having many things to write to you, I don't want to do so with paper and ink, but I hope to come to you, and to speak face to face, that our joy may be made full.
WEB
Having many things to write unto you, I would not write with paper and ink: but I trust to come unto you, and speak face to face, that our joy may be full.
KJV
What 2 John 1:12 means
The letter's author says he has much more to tell his readers, but he would rather say it in person, because being with them face to face will make their shared joy complete.
Second John is a very short letter, only a few sentences long, written by a church leader who calls himself “the elder” to a congregation he loves. He has been warning them about traveling teachers who denied that Jesus came in the flesh, and he has more to say about it. Here at the close he stops. He does not want to handle such things with paper and ink.
He would rather come and talk. In his world a letter was the ordinary way to reach people far off, and it was a genuine gift. Even so, he treats it as the lesser option. Presence completes what writing only begins, and the joy he wants for them arrives in full when they are together.