Studie
8 All the bright lights of heaven will I make dark over thee, and set darkness upon thy land, saith the Lord GOD.
In Amos 1:9, this signifies the union of charity and faith. (Arcana Coelestia 367)
16 I will bring the blind by a way that they don't know. I will lead them in paths that they don't know. I will make darkness light before them, and crooked places straight. I will do these things, and I will not forsake them.