“He teaches, moreover, that an answer to prayer is conditional upon the amount of faith that goes to the petition. To test this, He delays the answer. The superficial pray-er subsides into silence, when the answer is delayed. But the man of prayer hangs on, and on. The Lord recognizes and honours his faith, and gives him a rich and abundant answer to his faith-evidencing, importunate prayer.”E. M. Bounds
Source
E. M. Bounds, The Necessity of Prayer Exact original-source attribution has not been independently verified.