The power of prayer is unimaginable. Because we don't always see its immediate effects, many people, especially those who have just begun praying, don't understand the immensity of this gift from the Lord. The Lord hears every prayer, even the merest whisper of prayer - vocal prayer, wordless prayer, contemplative prayer, community prayer and the silent prayers of the heart that we are not even aware of - even the Holy Spirit within us prays. Prayer pierces heaven and we should have complete confidence that our prayers are heard and answered....every single one. I like to imagine prayer as beams of light which pierce the clouds of darkness around us. I came across this quote that really made me think of the power of prayer:
"Prayer is the one thing that can conquer God. Christ has willed that it should work no evil, and has given it all power over good. Its only art is to call back the souls of the dead from the very journey into death, to give strength to the weak, to heal the sick, to exorcise the possessed, to open prison cells, to free the innocent from their chains. Prayer cleanses from sin, drives away temptations, stamps out persecutions, comforts the fainthearted, gives new strength to the courageous, bring travelers safely home, calms the waves, confounds robbers, feeds the poor, over-rules the rich, lifts up the fallen, supports those who are falling, sustains those who stand firm.
All the angels pray. Every creature prays. Cattle and wild beasts pray and bend the knee...The birds rise and lift themselves up to heaven...
What more need be said on the duty of prayer? Even the Lord himself prayed. To Him be honor and power for ever and ever. Amen."
From the Treatise On Prayer by Tertullian (d. 259)
Yes, Tertullian, I think you've covered this nicely.