A man was arrested for slugging a parishioner outside of a Queens church, police said Thursday.

Chun Wang, 36, was raising a ruckus inside Saint Michael’s Church on 41st Avenue in Flushing on Oct. 28th when he asked to leave by a woman who was inside the church, cops said.

Wang was ushered out by the 53-year-old woman, but as she turned to re-enter the church, he clobbered her in the back of the head, knocking her out, according to police and video from the scene.

The victim was taken to Booth Hospital and treated for minor injuries.