(Jdt 9, 11-13) You are the God of the lowly
[11] "Your strength is not in numbers, nor does your power depend upon stalwart men; but you are the God of the lowly, the helper of the oppressed, the supporter of the weak, the protector of the forsaken, the savior of those without hope. [12] "Please, please, God of my forefather, God of the heritage of Israel, Lord of heaven and earth, Creator of the waters, King of all you have created, hear my prayer! [13] Let my guileful speech bring wound and wale on those who have planned dire things against your covenant, your holy temple, Mount Zion, and the homes your children have inherited.
(CCC 2559) "Prayer is the raising of one's mind and heart to God or the requesting of good things from God" (St. John Damascene, De fide orth. 3, 24: PG 94, 1089C) But when we pray, do we speak from the height of our pride and will, or "out of the depths" of a humble and contrite heart? (Ps 130:1). He who humbles himself will be exalted (Cf. Lk 18:9-14); humility is the foundation of prayer, Only when we humbly acknowledge that "we do not know how to pray as we ought" (Rom 8:26), are we ready to receive freely the gift of prayer. "Man is a beggar before God" (St. Augustine, Sermo 56, 6, 9: PL 38, 381).
