2 Corinthians 4:6
For God, who commanded the light to shine out of darkness, has shined in our hearts…
The Christianity of St. Paul was not a formulated religion, but the revelation or unveiling of God in his Son our Savior.
I. THE GLORY OF GOD IN THE FACE OF JESUS CHRIST. In that face, turned so graciously on the sons of men, is not merely the glow of human sympathy and pity, but the ineffable glory of the most high God. There is no thought here of the comparison sometimes made between the Divine glory in creation and that glory in redemption. The contrast still in the apostle's mind is between the Law and the gospel. He recalls the glory of God that once shone on the face of Moses as he descended from the holy mount; and he sets above it the glory in the face of Jesus Christ. The lustre on the prophet's countenance was transient, and its effect on the people was only to agitate them and make them desirous to have it softened by a veil. But Christ is the permanent and gracious Image of God; and he reveals it, not to drive men away in terror, but to save them and change them into the same image.
II. THE KNOWLEDGE OF THE GLORY OF GOD IN THE FACE OF JESUS CHRIST. Without this the salvation in the gospel profits us not. We can determine nothing about the benefit which may be derived from or through Christ by those who have had no opportunity to hear of him or know him. That will be as God sees meet. But to us who have the gospel, the blessing must come through spiritual knowledge. It knowledge of law and ordinances could save, Paul would have been saved while he was a Pharisee; but he entered not on a state of salvation till he gave up all for the excellency of the knowledge of Christ. Taught by his own experience, he commended this knowledge to others. It was his daily care and effort to spread abroad that knowledge. And its propagation in the early ages of Christianity seemed like a fulfilment of the ancient prophecy that "the knowledge of the glory of the Lord shall cover the earth as the waters cover the sea."
III. THE LIGHT OF THE KNOWLEDGE OF THE GLORY OF GOD IN THE FACE OF JESUS CHRIST. God was light. The nations, estranged from him, sat in darkness. In Judaea there was a lamp for his Name, but it was dim. Pharisaic pride and Sadducean scepticism threatened to put it out. Then the true Light came into the world. And now, as Christ becomes known in the Spirit to this man or that, he lights up both mind and heart. There is to every believer a revelation of the Lord. It is a light above all other lights - calm, pure, searching, gladdening. And the shedding abroad of the light of Christ and the love of God is always by the operation of the Holy Ghost. Thus "the excellency of the knowledge" of God in Christ is imparted by "the excellency of the power" of the Spirit. - F.
Parallel VersesKJV: For God, who commanded the light to shine out of darkness, hath shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.