1. About the Cause of Congruity
40. On the second point [n.33], it is one thing to speak of a cause of congruity and another of a cause of necessity:
One cause of congruity - why, to be sure, course it is fitting for a bigamist to be kept away from Holy Orders - is commonly set down by everyone, namely defect of sacrament. This is touched on by Augustine [n.31] and Ambrose [n.32]. And it is understood as follows: a priest, as vicar of Christ in the Church, or a person representing the person of Christ, ought not to have something that is repugnant to Christ in relation to the Church; but now Christ is the unique spouse of one Church, and the Church is the unique spouse of one spouse Christ; therefore he who has the opposite of this does not rightly signify or represent Christ in the Church. But a bigamist, who had two spouses, or one spouse who was spouse of two men, has something repugnant to the union of Christ and the Church.