Moreover, as for me, God forbid that I should sin against the Lord, in ceasing to pray for you.
I Sam. xii. 23.

More things are wrought by prayer Than this world dreams of. Wherefore, let thy voice Rise like, a fountain for me night and day. For what are men better than sheep or goats That nourish a blind life within the brain, If, knowing God, they lift not hands of prayer Both for themselves and those who call them friend? For so the whole round earth is every way Bound by gold chains about the feet of God.
Alfred Tennyson.

PERHAPS we do not think enough what an effective service prayer is, especially intercessory prayer. We do not believe as we should how it might help those we so fain would serve, penetrating the hearts we cannot open, shielding those we cannot guard, teaching where we cannot speak, comforting where our words have no power to soothe; following the steps of our beloved through the toils and perplexities of the day, lifting off their burdens with an unseen hand at night. No ministry is so like that of an angel as this — silent, invisible, known but to God.
Elizabeth Rundle Charles.

Intercessory prayer might be defined as loving our neighbor on our knees.
Charles H. Brent.