'The Twelve' in the Bible

Now the names of the twelve apostles are these: The first, Simon, who is called Peter, and Andrew his brother; James the'son of Zebedee, and John his brother;

And Jesus said unto them, Verily I say unto you, that ye who have followed me, in the regeneration when the Son of man shall sit on the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel.

And as Jesus was going up to Jerusalem, he took the twelve disciples apart, and on the way he said unto them,

Then one of the twelve, who was called Judas Iscariot, went unto the chief priests,

Now when even was come, he was sitting at meat with the twelve disciples;

And while he yet spake, lo, Judas, one of the twelve, came, and with him a great multitude with swords and staves, from the chief priest and elders of the people.