Contradiction with Exodus 8:18-19
Suggests that Egyptian magicians recognized the power of God, while Matthew 12:27 implies those casting out devils by other powers.
Exodus 8:18-19: And the magicians did so with their enchantments to bring forth lice, but they could not: so there were lice upon man, and upon beast.
Contradiction with Acts 19:13-15
Describes Jewish exorcists failing without the authority of Christ, contrasting with Matthew 12:27's implication of success outside Christ.
Acts 19:13-15: Then certain of the vagabond Jews, exorcists, took upon them to call over them which had evil spirits the name of the Lord Jesus, saying, We adjure you by Jesus whom Paul preacheth.
Contradiction with Mark 9:38-40
Shows Jesus acknowledging those casting out devils in His name, contrasting with the challenge posed in Matthew 12:27.
Mark 9:38-40: And John answered him, saying, Master, we saw one casting out devils in thy name, and he followeth not us: and we forbad him, because he followeth not us.
Contradiction with Luke 11:23
Jesus declares a stance of being for or against Him, which complicates the notion in Matthew 12:27 of others casting out devils.
Luke 11:23: He that is not with me is against me: and he that gathereth not with me scattereth.