Ancient Greek νεκρός (nekros, “dead”) + -mancer. The first element is often re-interpreted in folk etymology as Latin niger (“black”), leading to variants like nigromancer and an association with "black" magic.
But the arts of the necromancer were always and without exception treated as foreign to the religion of Yahweh.
Of Huitzilopochtli, the famed god, Sahagun says that he was a necromancer, loved " shapeshifting," like Odin, metamorphosed himself into animal forms, was miraculously conceived, and, among animals, is confused with the humming-bird, whose feathers adorned his statues."
The necromancer of ba`al 'obh was held to be possessed of the spirit who spoke through him with a hollow voice.
Indeed both necromancer and the spirit that possessed him were sometimes identified, and the former was simply called obh.
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