Reply Obj. 1: Receiving belongs to the Divine Persons in respect of their nature, whereas prayer belongs to one who receives through grace. The Son is said to ask or pray in respect of His assumed, i.e. His human, nature and not in respect of His Godhead: and the Holy Ghost is said to ask, because He makes us ask.
Reply Obj. 2: As stated in the First Part (Q. 79, A. 8), intellect and reason are not distinct powers in us: but they differ as the perfect from the imperfect. Hence intellectual creatures which are the angels are distinct from rational creatures, and sometimes are included under them. In this sense prayer is said to be proper to the rational creature.
Reply Obj. 3: The young ravens are said to call upon God, on account of the natural desire whereby all things, each in its own way, desire to attain the Divine goodness. Thus too dumb animals are said to obey God, on account of the natural instinct whereby they are moved by God. _______________________
ELEVENTH ARTICLE [II-II, Q. 83, Art. 11]
Whether the Saints in Heaven Pray for Us?
Objection 1: It would seem that the saints in heaven do not pray for us. A man's action is more meritorious for himself than for others. But the saints in heaven do not merit for themselves, neither do they pray for themselves, since they are already established in the term. Neither therefore do they pray for us.
Obj. 2: Further, the saints conform their will to God perfectly, so that they will only what God wills. Now what God wills is always fulfilled. Therefore it would be useless for the saints to pray for us.
Obj. 3: Further, just as the saints in heaven are above, so are those in Purgatory, for they can no longer sin. Now those in Purgatory do not pray for us, on the contrary we pray for them. Therefore neither do the saints in heaven pray for us.
Obj. 4: Further, if the saints in heaven pray for us, the prayers of the higher saints would be more efficacious; and so we ought not to implore the help of the lower saints' prayers but only of those of the higher saints.
Obj. 5: Further, the soul of Peter is not Peter. If therefore the souls of the saints pray for us, so long as they are separated from their bodies, we ought not to call upon Saint Peter, but on his soul, to pray for us: yet the Church does the contrary. The saints therefore do not pray for us, at least before the resurrection.