'For Us' in the Bible

And I shall turn back word to them, and say to them, The God of the heavens, he will prosper for us; and we his servants will rise up and build: and to you no portion and right and remembrance in Jerusalem.

In the place which ye shall hear the voice of the trumpet there ye shall gather together to us; our God shall war for us.

Also in that time I said to the people, A man and his youth shall lodge in the midst of Jerusalem; and they were watching for us in the night, and work in the day.

And we set up commands for us to give for us the third of the shekel in the year for the service of the house of our God.