If, in the Latin rite, subdeaconship has been received, there is a diriment impediment to matrimony, for the reception of this, the first of the major orders, imposes a solemn vow and obligation of lifelong chastity. In some Oriental rites the first major order is deaconship. This impediment is of ecclesiastical origin, and therefore it is in the power of the Church to dispense from it; but dispensation has very rarely been granted.