Oh but he did
Mat 10:34 ¶ Think not that I am come to send peace on earth: I came not to send peace, but a sword.
Mat 10:35 For I am come to set a man at variance against his father, and the daughter against her mother, and the daughter in law against her mother in law.
Mat 10:36 And a man's foes [shall be] they of his own household.