Vine's Expository Dictionary of NT Words
(Eng., "python"), in Greek mythology was the name of the Pythian serpent or dragon, dwelling in Pytho, at the foot of mount Parnassus, guarding the oracle of Delphi, and slain by Apollo. Thence the name was transferred to Apollo himself. Later the word was applied to diviners or soothsayers, regarded as inspired by Apollo. Since demons are the agents inspiring idolatry, 1 Corinthians 10:20 , the young woman in Acts 16:16 was possessed by a demon instigating the cult of Apollo, and thus had "a spirit of divination."
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Vines, W. E., M. A. Entry for 'Divination'. Vine's Expository Dictionary of NT Words. https://www.studylight.org/dictionaries/eng/ved/d/divination.html. 1940.