'Opponent' in the Bible

And at that time I instructed your judges, saying, '{hear out your fellow men}, and [then] judge fairly between a man and between his brother and between {his opponent who is a resident alien}.

Then each seized his {opponent} by the head and [each thrust] his sword in the side of his opponent, so they fell together. So they called the name of that place Helkath Hazzurim, which [is] in Gibeon.

"Let my enemy be like [the] wicked and my opponent like [the] unrighteous,

But thus says Yahweh: "Indeed a captive of [the] mighty shall be taken, and [the] war-booty [of] [the] tyrant shall be rescued, for I myself will dispute [with] your opponent, and I myself will save your children.