Set apart

Being made holy sounds like something for especially devout people. But in the Bible, to sanctify means: to set apart for God. A bowl in the temple was holy because it was meant for God's service, not because it was prettier than other bowls.

Jesus prays that his disciples will be set apart in this way, through God's word: thy word is truth. That word shapes them for the work ahead. Two verses later he says that he sanctifies himself for them. He leads the way.