And no wonder! For Satan himself transforms himself into an angel of light.
2 Corinthians 11:14
Surrounding context
11:13 For such are false apostles, deceitful workers, transforming themselves into apostles of Christ.
11:14 And no wonder! For Satan himself transforms himself into an angel of light.
11:15 Therefore it is no great thing if his ministers also transform themselves into ministers of righteousness, whose end will be according to their works.