Christian opposition to homosexuality is based upon Divine Revelation and the Natural Law. For Catholics, the Catechism clearly teaches that homosexuality is contrary to nature and homosexual acts are among the "sins gravely contrary to chastity" (CCC, 2396) and that "Basing itself on Sacred Scripture, which presents homosexual acts as acts of grave depravity, tradition has always declared that 'homosexual acts are intrinsically disordered.' They are contrary to the natural law. They close the sexual act to the gift of life. They do not proceed from a genuine affective and sexual complementarity. Under no circumstances can they be approved." This...