We should avoid Committing fornication against the Holy Spirit of God. To commit fornication against the Holy Spirit of God, is to join the activities of other faiths. People who worship idols, we should not join in their procession. We should not join the worship idol. We should not join to eat with them or to join their congregation. We should avoid that. And if we avoid this, then it would seem good that the Holy Spirit of God.
Indeed, we should not fornicate according to what we learned from the study. Joining other religious activities is fornication like dancing, singing and praying to other gods which is not a true god of the bible.
How do we know that they have fake god, because their doctrine is not based in the bible so thus their god is not also based in the bible.
Thanks be to God brother @joseystarr