2 Corinthians 11:14; 2 Corinthians 12:7

2 Corinthians 11:14

14 And no marvel; for Satan himself is transformed into an angel of light.

2 Corinthians 12:7

7 And lest I should be exalted above measure through the abundance of the revelations, there was given to me a thorn in the flesh, the messenger of Satan to buffet me, lest I should be exalted above measure.