'For Us' in the Bible

Then I heard the voice of the Lord saying:Who should I send?Who will go for Us?I said:Here I am. Send me.

For a child will be born for us,a son will be given to us,and the government will be on His shoulders.He will be namedWonderful Counselor, Mighty God,Eternal Father, Prince of Peace.

Lord, You will establish peace for us,for You have also done all our work for us.

For the majestic One, our Lord, will be there,a place of rivers and broad streamswhere ships that are rowed will not go,and majestic vessels will not pass.

I will make known the Lord’s faithful loveand the Lord’s praiseworthy acts,because of all the Lord has done for us—even the many good thingsHe has done for the house of Israeland has done for them based on His compassionand the abundance of His faithful love.