'The Twelve' in the Bible

So Jesus said to the twelve, "You do not want to go away also, [do you]?"

Jesus replied to them, "Did I not choose you, the twelve, and one of you is the devil?"

(Now he was speaking about Judas [son] of Simon Iscariot, because this one--one of the twelve--was going to betray him.)

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