In the third aliyah we are told to not follow after the ways of the idol worshipers that are to be removed from Israel before we get there. We are not even allowed to inquire about their way of serving their idols. Here we are also told to not believe a false prophet, even if he correctly predicts a sign or a wonder. Furthermore, if someone close to you tries to draw you to idol worship, you shouldn't listen, and such an act is punishable by death.