'For Us' in the Bible

And they said, An Egyptian delivered us out of the hand of the shepherds, and also drew for us and watered the flock.

Did we not tell you this word in Egypt, saying, Let us alone, so that we may serve the Egyptians? For it would have been better for us to serve the Egyptians, than that we should die in the wilderness.

And he said to the elders, You stay here for us until we come again to you. And behold, Aaron and Hur are with you. If any man has any matters to do, let him come to them.