'Let Us' in the Bible

{Ayin} All thine enemies gape upon thee, whispering and biting their teeth, saying, "Let us devour, for the time that we looked for is come: we have found and seen it."

{Nun} Let us look well upon our own ways, and remember ourselves, and turn again to the LORD.

Let us lift up our heart with our hands unto the God that is in heaven.