Whether heretics and those who are cut off from the Church can confer Orders? [*Cf. TP, Question [64], Articles [5],9]

Objections

Objection 1 : It would seem that heretics and those who are cut off from the Church cannot confer Orders. For to confer Orders is a greater thing than to loose or bind anyone. But a heretic cannot loose or bind. Neither therefore can he ordain.
Objection 2 : Further, a priest that is separated from the Church can consecrate, because the character whence he derives this power remains in him indelibly. But a bishop receives no character when he is raised to the episcopate. Therefore he does not necessarily retain the episcopal power after his separation from the Church.
Objection 3 : Further, in no community can one who is expelled therefrom dispose of the offices of the community. Now Orders are offices of the Church. Therefore one who is outside the Church cannot confer Orders.
Objection 4 : Further, the sacraments derive their efficacy from Christ's passion. Now a heretic is not united to Christ's passion; neither by his own faith, since he is an unbeliever, nor by the faith of the Church, since he is severed from the Church. Therefore he cannot confer the sacrament of Orders.
Objection 5 : Further, a blessing is necessary in the conferring of Orders. But a heretic cannot bless; in fact his blessing is turned into a curse, as appears from the authorities quoted in the text (Sent. iv, D, 25). Therefore he cannot ordain.