From now on I call you not servants; for the servant knows not what his lord does: but I have called you friends; for all things that I have heard of my Father I have made known unto you.
All Commentaries on John 15:15 Go To John 15
The Apostolic Constitutions
AD 375
"I call you no longer servants, but friends; for all things that I have heard of my Father have I made known unto you."