Charles H. Spurgeon on Psalms 56:9

When I cry unto thee, then shall mine enemies turn back. So soon as I pray they shall fly. So surely as I cry they shall be put to the rout.

"So swift is prayer to reach the sky,

So kind is God to me."

The machinery of prayer is not always visible, but it is most efficient. God inclines us to pray, we cry in anguish of heart, he hears, he acts, the enemy is turned back. What irresistible artillery is this which wins the battle as soon as its report is heard! What a God is this who harkens to the cry of his children, and in a moment delivers them from the mightiest adversaries! This I know. This is one of the believer's certainties, his axioms, his infallible, indisputable verities. For God is for me. This, we know, and we know, therefore, that none can be against us who are worth a moment's fear. "If God be for us, who can be against us?" Who will restrain prayer when it is so potent? Who will seek any other ally than God, who is instantly present so soon as we give the ordained signal, by which we testify both our need and our confidence?