'For Us' in the Bible

He who is not against us is for us;

"Rabbi," they said, "Moses made it a law for us: 'If a man's brother should die and leave a wife, but no child, the man shall marry the widow and raise up a family for his brother.'

Then he will himself show you a large room upstairs, ready furnished: there make preparation for us."

and they were saying to one another, 'Who will roll away the stone for us from the entrance to the tomb?"