John Calvin Commentary John 13:3

"[Jesus], knowing that the Father had given all the things into his hands, and that he came forth from God, and goeth unto God," — John 13:3 (ASV)

Jesus, knows that the Father had given all things into his hands. I believe that this was added for the purpose of informing us from where Christ obtained such a well-regulated composure of mind. It was because, having already obtained a victory over death, he raised his mind to the glorious triumph which was soon to follow. It usually happens that men seized with fear are greatly agitated. The Evangelist means that no agitation of this sort was to be found in Christ because, though he was to be immediately betrayed by Judas, still he knew that the Father had given all things into his hand.

It may be asked, how then was he reduced to such a degree of sadness that he sweat blood? I reply, both were necessary. It was necessary that he should have a dread of death, and it was necessary that, despite this, he should fearlessly discharge everything that belonged to the office of the Mediator.