This is part of a sermon relating to diligence in prayer for a lost loved one. Spurgeon presents that prayer is never in vain.
Matthew 7:7 says, “Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:” I hear another say, “I trust and believe that I am already saved; but I have been seeking for the salvation of others in answer to my prayers;” Dear friend, you will get it. “He that asks receives, and he that seeks finds; and to him that knocks, the door will be opened.” “But I have sought the conversion of one person for years with many prayers.” You will have it, or you will know one day why you don’t have it, and you will be made content not to have it. Continue to pray on in hope. Many a person has had his prayer for others answered after they had had died. I think I have reminded you before of the father who had prayed for many years for his sons and daughters, and yet they were not converted, but all became very worldly. His time came to die. He gathered his children around his bed, hoping to bear such a witness for Christ at the end that it might be blessed to their conversion; but unhappily for him he was in deep distress of soul, he had doubts about his own salvation in Christ. He was one of God’s children who are put to bed in the dark; this being above all the worst fear of his mind, that he feared his dear children would see his distress and be prejudiced against religion. The good man was buried and his sons came to the funeral, and God heard the man’s prayer that very day, for as they went away from the grave one of them said to the other, “Brother, our father died a most unhappy death.” “He did, brother; I was very much astonished at it, for I never knew a better man than our father.” “Ah,” said the first brother, “if a holy man such as our father found it a hard thing to die, it will be a dreadful thing for us who have no faith when our time comes.” That same thought had struck them all, and drove them to the cross, and so the good man’s prayer was heard in a mysterious manner. Heaven and earth will pass away, but while God lives, prayer must be heard. While God remains true to his word, supplication is not in vain. The Lord give you grace to exercise it continually.