Mystici Corporis Christi §86

⁸⁶ For there are some who neglect the fact that the Apostle Paul has used metaphorical language in speaking of this doctrine, and failing to distinguish as they should the precise and proper meaning of the terms the physical body, the social body, and the Mystical Body, arrive at a distorted idea of unity. They make the Divine Redeemer and the members of the Church coalesce in one physical person, and while they bestow divine attributes on man, they make Christ our Lord subject to error and to human inclination to evil. But Catholic faith and the writings of the holy Fathers reject such false teaching as impious and sacrilegious; and to the mind of the Apostle of the Gentiles it is equally abhorrent, for although he brings Christ and His Mystical Body into a wonderfully intimate union, he nevertheless distinguishes one from the other as Bridegroom from Bride.