'Behalf' in the Bible

But the testimony on my behalf which I accept is not from man; though I say all this in order that you may be saved.

"Master," asked Peter again, "why cannot I follow you now? I will lay down my life on your behalf.

"You say you will lay down your life on my behalf!" said Jesus; "in most solemn truth I tell you that the cock will not crow before you have three times disowned me."

At that time you will make your requests in my name; and I do not promise to ask the Father on your behalf,

and on their behalf I consecrate myself, in order that they may become perfectly consecrated in truth.