'Let Us' in the Bible

Behold, when we come into the land, thou shalt bind this line of scarlet thread in the window which thou didst let us down by: and thou shalt gather unto thee into the house thy father, and thy mother, and thy brethren, and all thy father's household.

Come up unto me, and help me, and let us smite Gibeon; for it hath made peace with Joshua and with the children of Israel.

Therefore we said, Let us now prepare to build us an altar, not for burnt-offering, nor for sacrifice: