(a) A condition, restriction, or prohibition, including a right of entry or possibility of reverter, which directly or indirectly limits the use or occupancy of real property on the basis of religion, race, color, national origin, sex, disability, or familial status is void, except this section shall not prohibit a religious organization, association, or society, or any nonprofit institution or organization operated, supervised, or controlled by or in conjunction with a religious organization, association, or society, from limiting the sale, rental, or occupancy of dwellings which it owns or operates for other than a commercial purpose to persons of the same religion, or from giving preference to such persons, unless membership in such religion is restricted because of race, color, sex, disability, familial status, or national origin.

(b) A person shall not insert in a written instrument relating to real property a provision that is void under this section or honor such a provision in the chain of title.

(c) A person shall not threaten, intimidate, or interfere with persons in the enjoyment of their dwelling because of the race, color, national origin, sex, or familial status of such persons, or of visitors or associates of such persons.

(d) A person shall not discharge, threaten, coerce, intimidate, or take any other adverse action against an employee, broker, agent, or other person because he or she refused to take part in a discriminatory housing practice or because he or she has aided or encouraged any other person in the exercise or enjoyment of any right granted under the provisions of this subchapter.