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.

7. "Lest any should say, How then is it that we continue to enjoy such unspeakable glory in a mortal body? Paul replies, this very fact is one of the most marvellous proofs of God's power, that an earthen vessel could bear such splendor and keep such a treasure" [Chrysostom, Homilies, 8.496, A]. The treasure or "the light of the knowledge of the glory of God." The fragile "earthen vessel" is the body, the "outward man" (2Co 4:16; compare 2Co 4:10), liable to afflictions and death. So the light in Gideon's pitchers, the type (Jud 7:16-20, 22). The ancients often kept their treasures in jars or vessels of earthenware. "There are earthen vessels which yet may be clean; whereas a golden vessel may be filthy" [Bengel].

that the excellency of the power, &c.—that the power of the ministry (the Holy Spirit), in respect to its surpassing "excellency," exhibited in winning souls (1Co 2:4) and in sustaining us ministers, might be ascribed solely to God, we being weak as earthen vessels. God often allows the vessel to be chipped and broken, that the excellency of the treasure contained, and of the power which that treasure has, may be all His (2Co 4:10, 11; Joh 3:30).

may be of God … not of us—rather, as Greek, "may be God's (may be seen and be thankfully [2Co 4:15] acknowledged to belong to God), and not (to come) from us." The power not merely comes from God, but belongs to Him continually, and is to be ascribed to him.