'Let Us' in the Bible

And the servants of the king of Syria said unto him, Their god is a god of the hills; therefore they were stronger than we: but let us fight against them in the plain, and surely we shall be stronger than they.

And his servants said unto him, Behold now, we have heard that the kings of the house of Israel are merciful kings: let us, we pray thee, put sackcloth on our loins, and ropes upon our heads, and go out to the king of Israel: peradventure he will save thy life.