Enoch 13

Enoch comes out of hiding and speaks to Azazyel.  He tells him he will be bound and not saved.  Then he spoke to all the "watchers" (the evil ones).  They were all afraid and asked Enoch to write a " memorial of supplication" for them to God, since they could not talk to Him anymore because of their wickedness.  Enoch writes it and goes on a journey.  While on the way he has a dream.

Enoch 13:9 I fell down and saw a vision of punishment, that I might relate it to the sons of heaven, and reprove them.

He heads back and begins to reprove them.