'The Twelve' in the Bible

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

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

And Jesus, going up to Jerusalem, took the twelve disciples with him apart in the way, and said to them,

Then one of the twelve, he who was called Judas Iscariote, went to the chief priests

And when the evening was come he lay down at table with the twelve.

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