William Barclay's Daily Study Bible - John 17:20-21
17:20-21 "It is not only for these that I pray, but also for those who are going to believe in their word of testimony to me. And my prayer is that they may all be one, even as you, Father, are in me, and I in you, so that they may be in us, so that the world may believe that you sent me." Gradually in this section Jesus' prayer has been going out to the ends of the earth. First, he prayed for himself as the Cross faced him. Second, he prayed for his disciples, and for God's keeping... read more
Matthew Henry's Complete Commentary - John 17:20-23
Next to their purity he prays for their unity; for the wisdom from above is first pure, then peaceable; and amity is amiable indeed when it is like the ointment on Aaron's holy head, and the dew on Zion's holy hill. Observe, I. Who are included in this prayer (John 17:20): ?Not these only, not these only that are now my disciples? (the eleven, the seventy, with others, men and women that followed him when he was here on earth), ?but for those also who shall believe on me through their word,... read more