'Let Us' in the Bible

But that it spread no further among the people, let us sternly threaten them, that they speak no longer to any man in this name.

And some days later Paul said unto Barnabas, Let us go again and visit our brethren in every city where we have preached the word of the Lord, and see how they do.

And there arose a great cry: and the scribes that were of the Pharisees' party arose, and contended, saying, We find no evil in this man: but if a spirit or an angel has spoken to him, let us not fight against God.