Revelation 9
1 Ref The fifth angel sounded, and I saw a star from the sky which had fallen to the earth. The key to the pit of the abyss was given to him.
2 Ref He opened the pit of the abyss, and smoke went up out of the pit, like the smoke from a{TR adds "great"} burning furnace. The sun and the air were darkened because of the smoke from the pit.