Isaiah 50:10-11

10Who among you fears Adonai? Who hears the voice of His servant? Who walks in darkness and has no light? Let him trust in the Name of Adonai and lean on his God.

11“Behold, all you who kindle a fire, encircling yourselves with firebrands. Walk in the light of your fire and among the brands you have lit. This you will have from My hand: you will lie down in torment.”