We may find in Paul's writings arguments which, however convincing to the Jew, are not convincing to us; we may prefer his experimental and ethical to his doctrinal teaching; some estimable people can only accept him when they have purged him of his Calvinism; others shut their eyes to this or that which seems to them a blot in his writings; but the fact remains that it is to this man we owe our Christianity. It was he who disengaged from the dying body of Judaism the new-born religion and held it aloft in the eye of the world as the true heir to universal empire. It was he whose piercing intellect and keen moral discernment penetrated to the very heart of this new thing, and saw in it a force to conquer the world and to rid men of all bondage and evil of every kind. It was he who applied to the whole range of human life and duty the inexhaustible ethical force which lay in Christ, and thus lifted at one effort the heathen world to a new level of morality. He was the first to show the superiority of love to law, and to point out how God trusted to love, and to summon men to meet the trust God thus reposed in them. We cannot measure Paul's greatness, because the light he has himself shed has made it impossible for us to put ourselves back in imagination into the darkness through which he had to find his way. We can but dimly measure the strength that was required to grasp as he grasped the significance of God's manifestation in the flesh. Paul then used two methods of teaching. In addressing those who had yet to be won to Christ, he used the foolishness of preaching, and presented to them the Cross of Christ. In addressing those who had already owned the power of the Cross and made some growth in Christian knowledge and character, he enlarged upon the significance of the Cross and the light it threw on all moral relations, on God and on man. And even in this department of his work he disclaims any desire to propagate a philosophy of his own. The system of truth he proclaims to the Christian people is not of his own devising. It is not in virtue of his own speculative ability he has discovered it. It is not one of the wisdoms of this world, having its origin in the brain of an ingenious theorist. On the contrary, it has its origin in God, and partakes therefore of the truth and stability attaching to the thoughts of God. II. But if it be undiscoverable by man, how does Paul come to know it? To the Corinthian intelligence there seemed but these three ways of learning anything: seeing, hearing, or thinking; and if God's wisdom was attainable by none of these, how was it reached? Paul proceeds to show how he was enabled to "speak" this wisdom. He does this in vers. 10-13, in which his chief affirmations are that the Spirit of God alone knows the mind of God, that this Spirit has been given to him to reveal to him God's mind and to enable him to divulge that mind to others in suitable words.