Isaiah 50:10-11

Who is among you that feareth Jehovah, that obeyeth the voice of his servant? he that walketh in darkness, and hath no light, let him trust in the name of Jehovah, and rely upon his God. Behold, all ye that kindle a fire, that gird yourselves about with firebrands; walk ye in the flame of your fire, and among the brands that ye have kindled. This shall ye have of my hand; ye shall lie down in sorrow.