John 1:30

Greek #5228 ὑπέρ. huper. Over, above, beyond, across from. A spatial preposition. The figurative uses might be "for the benefit," "for the sake of," but figurative use is conjecture, speculation, and based on what one perceives the context to be. It is opposite to the word ὑπό hupo, "under."

The translations "for the sake of" or "extending benefit to" are interpretations of the genitive. But the genitive can also mean "above" as in "ὑπὲρ τῆς γῆς" (hyper tēs gēs): "above the earth" or "beyond the earth"

In other places it is found taking an accusative which would give it the meaning of "over/beyond."