The Apostle Paul
2 Corinthians 4:3ESV·traditional attribution

And even if our gospel is veiled, it is veiled to those who are perishing.

John Calvin Reformed @genevareformer

3. But if our gospel is hid It might have been an easy thing to pour calumny upon what he had said as to the clearness of his preaching, because he had many adversaries. That calumny he repels with stern authority, for he threatens all who do not acknowledge the power of his gospel, and warns them that this is a token of reprobation and ruin.

Matthew Henry Presbyterian @wholebiblehenry

The apostle had, in the foregoing chapter, been magnifying his office, upon the consideration of the excellency or glory of that gospel about which he did officiate; and now in this chapter his design is to vindicate their ministry from the accusation of false teachers, who charged them as deceitful workers, or endeavoured to prejudice the minds of the people against them on account of their sufferings.

Commenting on 2 Corinthians 4:1-7

John Gill Reformed Baptist @doctorgill

But if our Gospel be hid,.... When the Gospel is called ours, the meaning is, not that ministers are the authors or subject of it; but it is so styled, because they are intrusted with it; it is preached by them; and is in opposition to another Gospel, the Gospel of the false apostles.