In this gospel passage, John shows Jesus to be in complete control of all that happens and to know in advance the events which shall take place. Some people say that John was writing long after the death of Jesus, about the year 95, and he was putting words in the mouth of Jesus. I don't know the answer to this. I was not there. But Jesus is God, he knows all men's hearts, and he knows all things. This tendency to make an ordinary man out of Jesus has something unbecoming about it. The Lord I have met in my life knows all about me. He does not need anyone to put words into his mouth.
Jesus predicts the betrayal of Judas in order to let the apostles understand when they look back over the events that Jesus is Lord. As usual he gives us a note of consolation; whoever welcomes Jesus also welcomes the one who sent him.
Do we welcome him?