[I do this] so that Satan cannot take advantage of us, for we are not unaware of his schemes.

For the god of this world [i.e., Satan] has blinded the minds of the unbelievers, so that they would not see the light of the Gospel of the splendor of Christ, who is the image of God.

And it is no wonder, for even Satan disguises himself as an angel of light [i.e., someone pure and righteous].

Therefore, it should not be surprising for Satan's ministers to disguise themselves as ministers of righteousness. Their [final] end will be what they deserve for such actions.

But, so that I would not become too conceited over the tremendous revelations [I received], a "thorn in the flesh" was given to me as a messenger from Satan to torment me. [Note: This "thorn" was probably some physical handicap, possibly defective eyesight. See Gal. 4:14-15; 6:11].