Matthew Poole and continuators on John 17:16

16 They are not of the world, even as I am not of the world .

This is the same thing which he had said before, ver. 14. which he again repeateth, either to fix it in their memories, that they calling it to their minds, might direct their lives accordingly, or be thereby fortified against the hatred and malice of the World; for which purpose he told them so before, Chap. 15.19. and again in this Chapter, ver. 14. (see the notes on Verse 14.)