What did Paul refer to when he declared, "To will is present with me; but how to perform that which is good I find not"? First read "The Gospel and Its Purpose," in the SIGNS of June 12. The apostle Paul in the seventh chapter of Romans is speaking of the experience of the convicted sinner, one to whom the law of God has come, has touched his heart, has reproved him for his sin, but who finds himself without strength to do right. He sees what he ought to do because he is convicted by the law (verses 13, 14), but he has no power to do it of himself. He finds this power, however, as he tells us in the twenty-fifth verse, in Jesus Christ. His thorn in the flesh was not sin, but evidently his defective eyesight, which he besought the Lord thrice to take away; but the Lord declared that His grace was sufficient for him, notwithstanding his infirmity.