The blood of Jesus Christ his Son cleanseth us from all sin.” Suddenly he was interrupted by an atheist who asked, “How can blood cleanse sin?” For a moment the preacher was silent; then he countered, “How can water quench thirst?” “I do not know,” replied the infidel, “but I know that it does.” “Neither do I know how the blood of Jesus cleanses sin,” answered the preacher, “but I know that it does.” —Sunday School Times