Prayer as an act of religion

In Ps. cxl. 2 we read: Let my prayer be directed as incense in Thy sight, and on these words the Gloss remarks: “According to this figure, in the Old Law incense was said to be offered as an odour of sweetness to the Lord.” And this comes under the virtue of religion. Therefore prayer is an act of religion.

It properly belongs to the virtue of religion to give due reverence and honour to God, and hence all those things by which such reverence is shown to God come under religion. By prayer, however, a man shows reverence to God inasmuch as he submits himself to Him and, by praying, acknowledges that he needs God as the Author of all his good. Whence it is clear that prayer is properly an act of religion.