Why will the prophet put out all the wicked in his building?

Is that to do a base or what? Apocalypse 11 How will he do? He'll have to have a base in the city of the evil, as this building is in the region of the city of the evil not in the city precisely. This prophet will be recognizing the true jews and sending them to Israel, he'll also eliminate thousands of wicked and preach against the system. Will he allow any family to stay?