en_tn_condensed/jhn/12/34.md

The Son of Man must be lifted up

The phrase "lifted up" means crucified. You may translate this in a way that includes the implied words "on a cross." Alternate translation: "The Son of Man must be lifted up on a cross" (See: rc://en/ta/man/translate/figs-ellipsis)

Who is this Son of Man?

Possible meanings are 1) "What is the identity of this Son of Man? or 2) "What kind of Son of Man are you talking about?"