4:1-7 The best of men would faint, if they did not receive mercy from God. And that mercy which has helped us out, and helped us on, hitherto, we may rely upon to help us even to the end. The apostles had no base and wicked designs, covered with fair and specious pretences. They did not try to make their ministry serve a turn. Sincerity or uprightness will keep the favourable opinion of wise and good men. Christ by his gospel makes a glorious discovery to the minds of men. But the design of the devil is, to keep men in ignorance; and when he cannot keep the light of the gospel of Christ out of the world, he spares no pains to keep men from the gospel, or to set them against it. The rejection of the gospel is here traced to the wilful blindness and wickedness of the human heart. Self was not the matter or the end of the apostles' preaching; they preached Christ as Jesus, the Saviour and Deliverer, who saves to the uttermost all that come to God through him. Ministers are servants to the souls of men; they must avoid becoming servants to the humours or the lusts of men. It is pleasant to behold the sun in the firmament; but it is more pleasant and profitable for the gospel to shine in the heart. As light was the beginning of the first creation; so, in the new creation, the light of the Spirit is his first work upon the soul. The treasure of gospel light and grace is put into earthen vessels. The ministers of the gospel are subject to the same passions and weaknesses as other men. God could have sent angels to make known the glorious doctrine of the gospel, or could have sent the most admired sons of men to teach the nations, but he chose humbler, weaker vessels, that his power might be more glorified in upholding them, and in the blessed change wrought by their ministry.
4. In whom—Translate, "In whose case."
god of this world—The worldly make him their God (Php 3:19). He is, in fact, "the prince of the power of the air, the spirit that ruleth in the children of disobedience" (Eph 2:2).
minds—"understandings": "mental perceptions," as in 2Co 3:14.
them which believe not—the same as "them that are lost" (or "are perishing"). Compare 2Th 2:10-12. South quaintly says, "when the malefactor's eyes are covered, he is not far from his execution" (Es 7:8). Those perishing unbelievers are not merely veiled, but blinded (2Co 3:14, 15): Greek, not "blinded," but "hardened."
light of the glorious gospel of Christ—Translate, "The illumination (enlightening: the propagation from those already enlightened, to others of the light) of the Gospel of the glory of Christ." "The glory of Christ" is not a mere quality (as "glorious" would express) of the Gospel; it is its very essence and subject matter.
image of God—implying identity of nature and essence (Joh 1:18; Col 1:15; Heb 1:3). He who desires to see "the glory of God," may see it "in the face of Jesus Christ" (2Co 4:6; 1Ti 6:14-16). Paul here recurs to 2Co 3:18. Christ is "the image of God," into which "same image" we, looking on it in the mirror of the Gospel, are changed by the Spirit; but this image is not visible to those blinded by Satan [Alford].