Judas was a believer. He was given power and authority to heal, raise the dead, cast out devils, etc.
Mark 16
17And t
hese signs shall follow them that believe; In my name
shall they cast out devils; they shall speak with new tongues;
Matthew 10
5These twelve Jesus sent forth, and commanded them, saying, Go not into the way of the Gentiles, and into
any city of the Samaritans enter ye not:
6But go rather to the lost sheep of the house of Israel.
7And as ye go, preach, saying, The kingdom of heaven is at hand.
8Heal the sick, cleanse the lepers, raise the dead, cast out devils: freely ye have received, freely give.