'The Twelve' in the Bible

So Jesus said to the Twelve: "Do you also wish to leave me?"

"Did not I myself choose you to be the Twelve?" replied Jesus; "and yet, even of you, one is playing the 'Devil's' part."

He meant Judas, the son of Simon Iscariot, who was about to betray him, though he was one of the Twelve.

But Thomas, one of the Twelve, called 'The Twin,' was not with them when Jesus came;