2 Corinthians 11:14 in the World English Bible
And no wonder, for even Satan masquerades as an angel of light.
Context
13 For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
14 And no marvel; for Satan himself is transformed into an angel of light.
15 Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.