George Mueller, the founder of the great faith orphanages in England in the nineteenth century, saw great answers to prayer even though some of the answers were delayed. When he was quite young he began to pray for two of his friends. He prayed for them every day for more than sixty years. One was converted just before Mueller’s death at what was probably the last preaching service Mueller held. The other was converted within a year of Mueller’s passing. Clearly we ought always to “pray and not give up” (Luke 18:1).

–James Boice, Psalms.