'Commitment' in the Bible

and David went out to meet them. He told them, "If you've come in peace to be of help to me, then you'll have my commitment. But if you've come to betray me to my enemies, even though I'm innocent of wrongdoing, then may the God of our ancestors watch and judge."

Now, to show my commitment to the temple of my God, I donate my personal treasure of gold and silver to the temple of my God, in addition to all that I have already supplied for this holy temple.