The history of a confessional sentence: the events leading up to the inclusion of the affinity sentence in the Westminster Confession of Faith, chapter 24, section 4, and the judicial history contributing to its removal in the American Presbyterian Church: “The man may not marry any of his wife’s kindred, nearer in blood, than he may of his own; nor, the woman, of her husband’s kindred, nearer in blood, than of her own”