Minn. Stat. § 363A.26
Nothing in this chapter prohibits any religious association, religious corporation, or religious society that is not organized for private profit, or any institution organized for educational purposes that is operated, supervised, or controlled by a religious association, religious corporation, or religious society that is not organized for private profit, consistent with the protections or privileges of the First Amendment of the United States Constitution and article I, section 16, of the Minnesota Constitution, including ministerial exceptions provided therein, from:
(3) taking any action with respect to the provision of goods, services, facilities, or accommodations directly related to the solemnization or celebration of a civil marriage that is in violation of its religious beliefs.
This section shall not apply to secular business activities engaged in by the religious association, religious corporation, religious society, or any institution organized for educational purposes that is operated, supervised, or controlled by a religious association, religious corporation, or religious society that is not organized for private profit, the conduct of which is unrelated to the religious and educational purposes for which it is organized.