'Behalf' in the Bible

Should good be repaid with evil?For they have dug a pit for me.Remember how I stood before YouTo speak good on their behalf,So as to turn away Your wrath from them.

“Please inquire of the Lord on our behalf, for Nebuchadnezzar king of Babylon is warring against us; perhaps the Lord will deal with us according to all His wonderful acts, so that the enemy will withdraw from us.”

Seek the welfare of the city where I have sent you into exile, and pray to the Lord on its behalf; for in its welfare you will have welfare.’

Yet King Zedekiah sent Jehucal the son of Shelemiah, and Zephaniah the son of Maaseiah, the priest, to Jeremiah the prophet, saying, “Please pray to the Lord our God on our behalf.”