Whether God alone, or the minister also, works inwardly unto the sacramental effect?

Objections

Objection 1 : It seems that not God alone, but also the minister, works inwardly unto the sacramental effect. For the inward sacramental effect is to cleanse man from sin and enlighten him by grace. But it belongs to the ministers of the Church "to cleanse, enlighten and perfect," as Dionysius explains (Coel. Hier. v). Therefore it seems that the sacramental effect is the work not only of God, but also of the ministers of the Church.
Objection 2 : Further, certain prayers are offered up in conferring the sacraments. But the prayers of the righteous are more acceptable to God than those of any other, according to Jn. 9:31: "If a man be a server of God, and doth His will, him He heareth." Therefore it stems that a man obtains a greater sacramental effect if he receive it from a good minister. Consequently, the interior effect is partly the work of the minister and not of God alone.
Objection 3 : Further, man is of greater account than an inanimate thing. But an inanimate thing contributes something to the interior effect: since "water touches the body and cleanses the soul," as Augustine says (Tract. lxxx in Joan.). Therefore the interior sacramental effect is partly the work of man and not of God alone.