Gregory the Great
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.
(Hom. xxvii.) I have set you,i. e. have planted you by grace, that ye should go by will (volendo not in Vulg.); to will being to go in mind, and bring forth fruit, by works. What kind of fruit they should bring forth He then shews: And that your fruit may remain: for worldly labour hardly produces fruit to last our life: and if it does, death comes at last, and deprives us of it all. But the fruit of our spiritual labours endures even after death; and begins to be seen at the very time that the results of our carnal labour beginto disappear. Let us then produce such fruits as may remain, and of which death, which destroys every thing, will be the commencement.