Reply Obj. 1: We need to pray to God, not in order to make known to Him our needs or desires but that we ourselves may be reminded of the necessity of having recourse to God's help in these matters.
Reply Obj. 2: As stated above, our motive in praying is, not that we may change the Divine disposition, but that, by our prayers, we may obtain what God has appointed.
Reply Obj. 3: God bestows many things on us out of His liberality, even without our asking for them: but that He wishes to bestow certain things on us at our asking, is for the sake of our good, namely, that we may acquire confidence in having recourse to God, and that we may recognize in Him the Author of our goods. Hence Chrysostom says [*Implicitly (Hom. ii, de Orat.; Hom. xxx in Genes.; Cf. Caten. Aur. on Luke 18)]: "Think what happiness is granted thee, what honor bestowed on thee, when thou conversest with God in prayer, when thou talkest with Christ, when thou askest what thou wilt, whatever thou desirest." _______________________
THIRD ARTICLE [II-II, Q. 83, Art. 3]
Whether Prayer Is an Act of Religion?
Objection 1: It would seem that prayer is not an act of religion. Since religion is a part of justice, it resides in the will as in its subject. But prayer belongs to the intellective part, as stated above (A. 1). Therefore prayer seems to be an act, not of religion, but of the gift of understanding whereby the mind ascends to God.
Obj. 2: Further, the act of latria falls under a necessity of precept. But prayer does not seem to come under a necessity of precept, but to come from the mere will, since it is nothing else than a petition for what we will. Therefore prayer seemingly is not an act of religion.
Obj. 3: Further, it seems to belong to religion that one "offers worship and ceremonial rites to the Godhead" [*Cicero, Rhet. ii, 53]. But prayer seems not to offer anything to God, but to ask to obtain something from Him. Therefore prayer is not an act of religion.
On the contrary, It is written (Ps. 140:2): "Let my prayer be directed as incense in Thy sight": and a gloss on the passage says that "it was to signify this that under the Old Law incense was said to be offered for a sweet smell to the Lord." Now this belongs to religion. Therefore prayer is an act of religion.
I answer that, As stated above (Q. 81, AA. 2, 4), it belongs properly to religion to show honor to God, wherefore all those things through which reverence is shown to God, belong to religion. Now man shows reverence to God by means of prayer, in so far as he subjects himself to Him, and by praying confesses that he needs Him as the Author of his goods. Hence it is evident that prayer is properly an act of religion.