How does Tartuffe succeed in alienating Orgon from his family in Tartuffe?

Tartuffe exerts a strong power over Orgon, who worships him as if he were a saint and shuns his own family in favor of this stranger. Orgon decides to make his daughter marry Tartuffe and disinherits his own son in order to make Tartuffe his sole heir. When Damis reports to Orgon that Tartuffe has tried to seduce his wife, Orgon does not believe this and instead blames Damis for speaking out against Tartuffe. However, when Orgon hides under a table and overhears Tartuffe trying once again to seduce her, he finally sees that he has been betrayed.