‘But that the world may know’; who is the world? Well, throughout the chapter the world has always been unbelievers. That the unbelieving, the chief priests, the scribes and Pharisees, the persecutors – ‘But that they may know that I love the Father’ I am going to Calvary.
We may be thrown a little by the concluding words of this chapter – ‘Arise, let us go hence.’ Some people think that chapters 15 and 16 were certainly spoken in the upper room but a little earlier, but John tends to be, with one or two exceptions, very chronological in his account, so it is more likely that the discourse follows the order we have in chapter 13, 14, 15, 16, culminating in the great High Priestly prayer. It seems that although they arose from reclining at the Lord’s Supper meal and the first part of the discourse, the disciples then stood ready to leave the upper room in that house for their journey to the Mount of Olives. But at that time the discourse did not actually end. It goes on, and it goes on through chapter 15 and chapter 16, and then ends in prayer. You can imagine the final discourse, and finally the Lord takes up his posture for prayer and he prays that great High Priestly prayer in chapter 17. And then they proceed and leave.