'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;

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

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

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

When the evening was come, he sat down with the twelve. And as they ate he said, Verily I say to you, One of you will betray me.

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.