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21 The strong among the mighty shall speak to him out of the midst of hell with them that help him: they are gone down, they lie uncircumcised, slain by the sword.
In Amos 1:9, this signifies the union of charity and faith. (Arcana Coelestia 367)
6 He made his son to pass through the fire, and practiced sorcery, and used enchantments, and dealt with those who had familiar spirits, and with wizards: he worked much evil in the sight of Yahweh, to provoke him to anger.