Charles Spurgeon Commentary 2 Corinthians 4:6-7

"Seeing it is God, that said, Light shall shine out of darkness, who shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ. But we have this treasure in earthen vessels, that the exceeding greatness of the power may be of God, and not from ourselves;" — 2 Corinthians 4:6-7 (ASV)

To give the light of the knowledge of the glory of God in the face of Jesus Christ. But we have this treasure in earthen vessels,

The most earnest and faithful minister of the gospel must always remember that humbling truth. He has this precious treasure of the gospel entrusted to his charge; he knows he has it, and he means to keep it safely, but still, he is nothing but an earthen vessel, easily broken, soon marred—a poor depository for such priceless truth. Yet God has a good reason for putting this treasure into earthen vessels.

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. But we have this treasure in earthen vessels, that the excellency of the power may be of God, and not of us. (2 Corinthians 4:6–7)

God might have put the priceless treasure of the gospel into the golden vessel of cherubim and seraphim; and He might have sent angels, who would never suffer, who would never err, who would never sin, to preach the Word. But, instead of doing so, He has chosen to send the gospel to men by commonplace beings like themselves. We have this treasure in earthen vessels, and this redounds greatly to God's glory; and, dear friends, the great object of sending the gospel into the world is the glory of God. He intended to manifest His mercy to men so that His mercy might be glorified; and therefore He has committed the gospel, not to the trust of perfect men, but to the trust of poor, shallow, earthen vessels like ourselves.