But we have been deceived by our own heart most of all. Who has not proved the truth of the Scripture: "The heart is deceitful above all things and desperately wicked; who can know it?" How many times we have said that we never would do a certain thing again, and then have done it within twenty-four hours! A man may think he has fathomed its depths, but he finds there are further depths he has not reached. What gross self-deception is due to it! "He that trusteth in his own heart is a fool," said Solomon. Luther once said he feared his own heart more than the Pope and all the cardinals. Many a weeping wife has come to me about her husband, saying: "He is good at heart." The truth is--that is the worst spot in him. If the heart was good, all else would be right. Out of the heart are the issues of life. Christ said: "From within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders, thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness." That is Christ's own statement regarding the unregenerate heart. Some years ago a remarkable picture was exhibited in London. As you looked at it from a distance, you seemed to see a monk engaged in prayer, his hands clasped, his head bowed. As you came nearer, however, and examined the painting more closely, you saw that in reality he was squeezing a lemon into a punchbowl! What a picture that is of the human heart! Superficially examined, it is thought to be the seat of all that is good and noble and pleasing in a man; whereas in reality, until regenerated by the Holy Ghost, it is the seat of all corruption. "This is the condemnation, that light is come into the world, and men _loved darkness rather than light_." A Jewish rabbi once asked his scholars what was the best thing a man could have in order to keep him in the straight path. One said _a good disposition;_ another, _a good companion;_ another said _wisdom_ was the best thing he could desire. At last a scholar replied that he thought _a good heart_ was best of all. "True," said the rabbi, "you have comprehended all that the others have said. For he that hath a good heart will be of a good disposition, and a good companion, and a wise man. Let every one, therefore, cultivate a sincerity and uprightness of heart at all times, and it will save him an abundance of sorrow." We need to make the prayer of David--"Create in me a clean heart, O God, and renew a right spirit within me!" God Is Not Mocked. Bear in mind, the God of the Bible has never deceived anyone, and never can, and never will; that is the difference between the God of the Bible and the god of this world. He beholds the ways of men; He looks into their hearts; He knows their secret ways; they need not tell Him or try to conceal anything from Him.