Deuteronomy 13 Consequences 

Moses was given Ten Commandments to teach the people how to live a life that was holy and pure. Specifically God wanted the people to avoid idolatry of all kinds. It was so serious a sin that He told the leaders to execute the one that led the people into this sin.

Craigie wrote this commentary on this chapter: “Of all potential crimes in ancient Israel, the one described in this chapter was the most dangerous in terms of its broader ramifications: to attempt deliberately to undermine allegiance to God was the worst form of subversive activity, in that it eroded the constitutional basis of the potential nation, Israel. In its implications, the crime would be equivalent to treason or espionage in time of war.”

Today we must also be cognizant of this in our own society and take measures to protect our nation, our homes, our churches and most importantly our children who are the most impressionable.