'Deliverer' in the Bible

Then he said, "If Aram [is] stronger than I [am], you must become my deliverer; but if the {Ammonites} [are] too strong for you, then I will come to rescue you.

and thy maid-servant hath two sons; and they strive both of them in a field, and there is no deliverer between them, and the one smiteth the other, and putteth him to death;

And he said, The LORD is my rock, and my fortress, and my deliverer;

They looked out, but there was no deliverer, [even] to Yahweh, but he did not answer them.