'Behalf' in the Bible

But Joash responded to everyone who was opposing him, "Do you really intend to fight on Baal's behalf? Do you really intend to rescue him by ordering that whoever fights him will be executed by morning? If Baal is a god, let him fight for himself. After all, it was his altar that was torn down."

So his mother's relatives spoke all of this on his behalf in the presence of all the "lords" of Shechem. Since they were inclined to follow Abimelech, they said, "He's our relative!"

because my father fought on your behalf, throwing away all concern for his own life, and delivered you from Midian's domination.

So Manoah prayed to the LORD, "Please, Lord, have the man of God whom you sent before come again so he can instruct us what to do on behalf of the child who is to be born."