'For Us' in the Bible

And it came to pass after the death of Joshua, that the sons of Israel asked of LORD, saying, Who shall go up for us first against the Canaanites, to fight against them?

And the sons of Israel arose, and went up to Bethel, and asked counsel of God. And they said, Who shall go up for us first to battle against the sons of Benjamin? And LORD said, Judah first.