New Life Version, Joshua 22:
17 “All the people of the Lord say, ‘What sin is this that you have done against the God of Israel?
You have turned away from following the Lord this day, by building yourselves an altar.
Today you have gone against the Lord.
17 Is not the sin of Peor enough for us?
We have made ourselves unclean from that to this day, and much trouble has come upon the people of the Lord.
18 Now to add to that sin, this day you have turned away from following the Lord.
If you go against the Lord today, He will be angry with all the people of Israel tomorrow.
So what is the sin of Peor? Well for that answer, we need to look to o Numbers chapter 25 ve 3 which says,
So Israel yoked themselves to the Baal of Peor and the LORD’s anger burned against them…
Obviously, then Baal is not another name for God, because God would not be angry, so Baal this is just logically, has to be a different or competing god to the One and True. Since yoking yourself, pledging your trough to another, before or to the exclusive of, God is a sin, we can just logically, without knowing a thing about Baal and his cult, know now that Joshua 19:22 is referring to the sin of Peor is referring to a place and time when the Israelites fell off the wagon and went astray.
It was obviously, not a small trifling sin either, because the Lord’s anger “burned against them”. Call it what you will, the Sin of Peor is obviously so bad that even by Joshua, the Israelites were worried that it was still dogging their trail and that they were now contemplating a new “sin” figuring that since they had left Peor and were in a new time and a new place that this one would be Ok.
Joshua though reminds them that is not true because the first Commandment in the 10 Commandments hit parade is “. . Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. This is the first and great commandment.” This is repeated by Jesus as well as the most important thing to do and not treat your brother like yourself as so many fallacious sites quote.
So to avoid the “sin of Peor” do not follow a false prophet to lead you astray by saying “that you are following God’s word if you do this.” Instead, follow God’s word and use that as your litmus test and that way you will be putting the horse in front of the cart and find it all the easier to stay on the road to Glory.