'Let Us' in the Bible

But when the tenant farmers saw the son, they said to one another, 'This is the heir [to the vineyard]. Come on, let us kill him so we can take over his inheritance.'

Then at midnight someone shouted, 'Look, the [bride and] groom are here. Come on, let us go out and meet them.'

Get up, let us be going. Look, the one who will turn me over [to the Jewish leaders] is nearby."

But the rest of them said, "Let him alone; let us see if Elijah [really] comes to save him."