Augustine of Hippo
Catena Aurea · Johannesevangelium 15
This is my commandment, That ye love one another, as I have loved you. Greater love hath no man than this, that a man lay down his life for his friends. Ye are my friends, if ye do whatsoever I command you. Henceforth I call you not servants; for the servant knoweth not what his Lord doeth: but I have called you friends; for all things that I have heard of my Father I have made known unto you. Ye have not chosen me, but I have chosen you, and ordained you, that ye should go and bring forth fruit, and that your fruit should remain: that whatsoever ye shall ask of the Father in my name, he may give it you. But I have called you friends, for all things that I have heard of My Father, I have made known unto you.
(Tract. lxxxvi. 1) But how did He make known to His disciples all things that He had heard from the Father, when He forebore saying many things, because He knew they as yet could not bear them? He made all things known to His disciples, i. e. He knew that He should make them known to them in that fulness of which the Apostle saith, Then we shall know, even as we are known. (1 Cor. 13:12) For as we look for the death of the flesh, and the salvation of the soul; so should we look for that knowledge of all things, which the Only-Begotten heard from the Father.