'The Twelve' in the Bible

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

And Jesus said to them, Truly I say to you that in the time when all things are made new, and the Son of man is seated in his glory, you who have come after me will be seated on twelve seats, judging the twelve tribes of Israel.

And when Jesus was going up to Jerusalem, he took the twelve disciples on one side, and said to them,

Then one of the twelve, who was named Judas Iscariot, went to the chief priests and said,

Now when evening was come, he was seated at table with the twelve disciples;

And while he was still talking, Judas, one of the twelve, came, and with him a band armed with swords and sticks, from the chief priests and those in authority over the people.