I would suggest you study what God does to those who pollute service to Him with paganism.
Leviticus 20:6 And the soul that turneth after such as have familiar spirits, and after wizards, to go a whoring after them, I will even set my face against that soul, and will cut him off from among his people.
Psalms 106:39 Thus were they defiled with their own works, and went a whoring with their own inventions.
Ezekiel 6:9 And they that escape of you shall remember me among the nations whither they shall be carried captives, because I am broken with their whorish heart, which hath departed from me, and with their eyes, which go a whoring after their idols: and they shall lothe themselves for the evils which they have committed in all their abominations.
Ezekiel 23:30 I will do these things unto thee, because thou hast gone a whoring after the heathen, and because thou art polluted with their idols.
You may what to read all of Ezekiel 23 to see what “these things” are.
Cynical, cynical, bear, bear, bear.
Remember the milieu for this. The Old Testament, the Law. Where God used the Law to demonstrate His displeasure with sin. Lots and lots of rules, lots and lots of harsh penalties.
Now the Gospel power has come. IT takes care of the sin. God has full confidence in it. It’s His own promise after all!