Church Fathers on John 13:33

After He had said, And shall straightway glorify Him, that they might not think that God was going to glorify Him in such a way, as that He would no longer have any converse with them on earth, He says, Little children, yet a little while I am with you: as if He said, I shall indeed straightway be glorified by My resurrection, but I shall not straightway ascend to heaven. For we read in the Acts of the Apostles, that He was with them forty days after His resurrection. These…

Little children, He says; for their souls were yet in infancy. But these little children, after His death, were made brethren; as before they were little children, they were servants.

And therefore He said, little children; for He did not mean to speak to them, as He had to the Jews. you cannot follow Me now, He says, in order to rouse the love of His disciples. For the departure of loved friends kindles all our affection, and especially if they are going to a place where we cannot follow them. He purposely too speaks of His death, as a kind of translation, a happy removal to a place, where here mortal bodies do not enter