2 Corinthians 4:4

4:4 among whom the god of this age has blinded the minds of those who do not believe so they would not see the light of the glorious gospel of Christ, who is the image of God.

2 Corinthians 9:13

9:13 Through the evidence of this service they will glorify God because of your obedience to your confession in the gospel of Christ and the generosity of your sharing with them and with everyone.

2 Corinthians 11:4

11:4 For if someone comes and proclaims another Jesus different from the one we proclaimed, or if you receive a different spirit than the one you received, or a different gospel than the one you accepted, you put up with it well enough!