'The Twelve' in the Bible

So Jesus said to the twelve, "You don't want to go away too, do you?"

Jesus replied, "Didn't I choose you, the twelve, and yet one of you is the devil?"

(Now he said this about Judas son of Simon Iscariot, for Judas, one of the twelve, was going to betray him.)

Now Thomas (called Didymus), one of the twelve, was not with them when Jesus came.