'For Us' in the Bible

When one man puts his hand on another in his father's house, and says, You have clothing, be our ruler and be responsible for us in our sad condition:

And the voice of the Lord came to my ears, saying, Whom am I to send, and who will go for us? Then I said, Here am I, send me.

And when they say to you, Make request for us to those who have control of spirits, and to those wise in secret arts, who make hollow bird-like sounds; is it not right for a people to make request to their gods, to make request for the living to the dead?

And your sons will be building again the old waste places: you will make strong the bases of old generations: and you will be named, He who puts up the broken walls, and, He who makes ready the ways for use.

I will give news of the mercies of the Lord, and his great acts, even all the things the Lord has done for us, in his great grace to the house of Israel; even all he has done for us in his unnumbered mercies.