The following is taken from Charles Spurgeon's sermon on these two verses.
And now, turning aside for a minute, I shall conclude by making an observation or two to many now present. There are some here who say, "I am never disturbed in that fashion." Then I am sorry for you. I will tell you the reason of your false peace. You have not the grace of God in your hearts. If you had you would surely find this conflict within you. Do not despise the Christian because he is in the conflict, despise yourself because you are out of it. The reason why the devil lets you alone is, that he knows you are his. He does not need to trouble you much now; he will have time enough to give you your wages as the last. He troubles the Christian because he is afraid of losing him; he thinks that if he does not tease him here, he shall never have the chance to do it in eternity, so he will bite him, and bark at him while he may. That is why the Christian is vexed more then you are. As for you, you may well be without any pain, for dead men feel no blows. You may well be without prickings of conscience; for men that are corrupt are not likely to feel wounds, though you stab them from head to foot. I pity your condition, for the worm that dieth not is preparing to feed upon you; the eternal vulture of remorse shall soon wet his horrid beak with the blood of your soul. Tremble; for the fires of hell are hot and unquenchable, and the place of perdition is hideous beyond a madman's dream. Oh that you would think of your last end. The Christian may have an evil present, but he has a glorious future; but your future is the blackness of darkness for ever. I adjure you by the living God, you that fear not Christ, consider your ways. You and I must give an account for this morning's service. You are warned, men; you are warned. Take heed to yourselves, that ye think not this life to be everything. There is a world to come; there is "after death the judgment." If you fear not the Lord, there is after judgment eternal wrath and everlasting misery.
And now a word to those who are seeking Christ. "Ah!" says one, "sir, I have sought Christ, but I feel worse than I ever was in my life. Before I had any thoughts about Christ I felt myself to be good, but now I feel myself to be evil." It is all right, my friend; I am glad to hear you say so. When surgeons heal a patient's wound, they always take care to cut away the proud flesh, because the cure can never be radical while the proud flesh remains. The Lord is getting rid of your self-confidence and self-righteousness. He is just now revealing to your soul the deadly cancer which is festering within you. You are on the sure road to healing, if you are on the way to wounding. God wounds before he heals; he strikes a man dead in his own esteem before he makes him alive. "Ah," cries one, "but can I hope that I ever shall be delivered?" Yes, my brother, if you now look to Christ. I care not what your sin nor what your despair of heart; if you will only turn your eye to him who bled upon the tree, there is not only hope for you, but there is a certainty of salvation. I myself, while thinking over this subject, felt a horror of great darkness rush over my spirit, as I thought what danger I was in lest I should be defeated, and I could not get a glimpse of light into my burdened spirit, until I turned my eye, and saw my Master hanging on the tree. I saw the blood still flowing; faith laid hold upon the sacrifice, and I said, "This cross is the instrument of Jesu's victory, and shall be the means of mine." I looked to his blood; I remembered that I was triumphant in that blood, and I rose from my meditations, humbled, but yet rejoicing; cast down, but not in despair; looking for the victory. Do likewise. "Jesus Christ came into the world to save sinners: believe that. You are an awakened, conscious and penitent sinner; therefore, he came to save you. Believe his word; trust him. Do nothing for your own salvation of yourself, but trust him to do it. Cast yourself simply and only on him; and, as this Bible is true, you shall not find the promise fail you—"He that seeketh findeth; to him that knocketh it shall be opened."
May God help you, by giving you this new life within! May he help you to look to Jesus, and though long and hard be the conflict, sweet shall be the victory. [source]