1 Enoch 23

23 From thence I went to another place to the west of the ends of the earth. 2And I saw a burning fire which ran without resting, and paused not from its course day or night but ran regularly. 3And I asked saying: "What is this which rests not?"

4Then Raguel, one of the holy angels who was with me, answered me and said unto me: "This course of fire which thou hast seen is the fire in the west which persecutes all the luminaries of heaven."