"In a great thaw on one of the American rivers, there was a man on one of the cakes of ice, which was not yet actually separated from the unbroken mass. In his terror, however, he did not see this, but knelt down and began to pray aloud for God to deliver him. The spectators on the shorecried loadly to him, 'Man, man, stop praying and run for shore.' So I would say to some of you, 'Rest not in praying, but believe in Jesus.'"- Page 25, Spurgeon's Sermon Notes
Further recommended reading & listening:
The Best of The Daily Spurgeon
The Forgotten Spurgeon, by Iain Murray