Adam Clarke's Commentary on the Bible - John 17:19
I sanctify myself - I consecrate and devote myself to death - that I may thereby purchase eternal salvation for them. There seems to be here an allusion to the entering of the high priest into the holy of holies, when, having offered the sacrifice, he sprinkled the blood before the ark of the covenant. So Jesus entered into the holiest of all by his own blood, in order to obtain everlasting redemption for men: see Hebrews 9:11-13 . The word, ἁγιαζω , to consecrate or sanctify, is used... read more
Adam Clarke's Commentary on the Bible - John 17:18
As thou hast sent me - so have I also sent them - The apostles had the same commission which Christ had, considered as man - they were endued with the same Spirit, so that they could not err, and their word was accompanied with the same success. read more