14 But I trust I shall shortly see thee, and we shall speak face to face. Peace be to thee. Our friends salute thee. Greet the friends by name.
[AD 215] Clement of Alexandria on 3 John 1:14
Do not let quarrelsomeness with its love of empty victory creep into our midst, for our aim is the elimination of all discord. Surely this is the meaning of the expression “Peace be to you.”

[AD 449] Hilary of Arles on 3 John 1:14
John means by this that he still has many commands to give them.

[AD 990] Oecumenius on 3 John 1:13-14
I had many things to write, but I do not want to write to you with ink and pen. However, I hope to see you soon, and we will speak in person. Peace be with you. Your friends greet you. Greet your friends by name.
Similar things have been said and interpreted at the end of the preceding letter; therefore, it would be unnecessary to repeat the same things again.
The end, with divine assistance favoring, of the third Catholic letter of John.