Bible Verses About Idolatry: Swearing by other gods
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And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people.
Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:
Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies,
Wherefore, my dearly beloved, flee from idolatry.
Now while Paul waited for them at Athens, his spirit was stirred in him, when he saw the city wholly given to idolatry.
Verses on Swearing by other gods
And in all things that I have said unto you be circumspect: and make no mention of the name of other gods, neither let it be heard out of thy mouth.
That ye come not among these nations, these that remain among you; neither make mention of the name of their gods, nor cause to swear by them, neither serve them, nor bow yourselves unto them: