If I be lifted up from the earth, He says, i. e. when I shall be lifted up. He does not doubt that the work will be accomplished which He came to do. By His being lifted up, He means His passion on the cross, as the Evangelist adds: This He said, signifying by what death He should die.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Tr. lii. 11