2 Corinthians 11:14:

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

See also:

Prayers God Won’t Answer
Objection: So-and-So Had a Vision Where Jesus Said That a Relative Who Died in the Prime of Life Was Called Home by God and Had Finished His Course
Objection: I Got a Debilitating Disease and Cried, “Why Me?”  And the Lord Answered, “Why NOT You?”