Charles Ellicott Commentary John 13:31

"When therefore he was gone out, Jesus saith, Now is the Son of man glorified, and God is glorified in him;" — John 13:31 (ASV)

Now is the Son of man glorified.—Compare Notes on John 11:4; John 12:28. The going out of Judas is the sign that the betrayal and death of the Son of Man was at hand. In that was the glory of His accomplished work, and He speaks of this glory as present. It lies so immediately before Him that it is at once realised; and the brightness of the vision overpowers all thought of the darkness of the path which leads to it.

God is glorified in him.—This is a re-statement of the thought which has met us whenever the work of the Son has been dwelt upon. It was the Father’s work too. The glory of the Son of Man in the redemption of the world was the glory of God, who gave His only-begotten Son, that by Him the world might be saved.

There is a contrast drawn here between the humanity and the divinity united in the person of our Lord. In Him, i.e., in His person, in the person of the Son of Man suffering and crucified, the attributes of the majesty and glory of God were manifested. It was an utterance to the world, in a fullness never heard before, of the Justice, Holiness, and Love which are the nature of God.