Matthew 10:2-4: Now the names of the twelve apostles are these: first, Simon, who is called Peter, and Andrew his brother; James the son of Zebedee, and John his brother;
3 Philip and Bartholomew; Thomas and Matthew the tax collector; James the son of Alphaeus, and Lebbaeus, whose surname was Thaddaeus;
4 Simon the Cananite, and Judas Iscariot, who also betrayed Him.

It would have been embarrassing for the early church to invent a disciple of Jesus who betrayed him. Meier observes, “The criterion of embarrassment clearly comes in to play as well, for there is no cogent reason why the early church should have gone out of its way to invent such a troubling tradition as Jesus’ betrayal by Judas, one of his chosen Twelve.​ --Sean McDowell