'For Us' in the Bible

Lifting up a horn of salvation for us in the house of his servant David,

Salvation from those who are against us, and from the hands of those who have hate for us;

It is right for you to do this for him, because he is a friend to our nation, and himself has put up a Synagogue for us.

And when they were about to go away from him, Peter said to Jesus, Master, it is good for us to be here; let us make three tents, one for you and one for Moses and one for Elijah: having no knowledge of what he was saying.

Is it right for us to make payment of taxes to Caesar or not?

And Jesus sent Peter and John, saying, Go and make the Passover ready for us, so that we may take it.