'The Twelve' in the Bible

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

And Jesus said to them, Truly do I say to you, that, in the renovation when the Son of man sitteth on the throne of his glory, ye who have followed me shall also yourselves sit on twelve thrones, judging the twelve tribes of Israel.

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

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

And when evening came, he took his place at table with the twelve disciples.

And while he was yet speaking, lo! 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.