'The Twelve' in the Bible

And the names of the twelve apostles are these; First, Simon, who is called Peter, and Andrew his brother; James, the son of Zebedee, and John his brother;

And Jesus said to them, I tell you truly, that you who have followed me, in the regeneration when the Son of man shall sit on the throne of his glory, shall yourselves also sit on twelve thrones, judging the twelve tribes of Israel;

Then went one of the twelve called Judas Iscariot to the chief priests,

and when it was evening he reclined with the twelve.

And while he was yet speaking, behold, Judas, one of the twelve, came, and with him a great multitude, with swords and clubs, from the chief priests and elders of the people.