Ticket to Heaven

Ticket to Heaven is a 1981 Canadian film about the recruiting of a man into a group portrayed to be a cult, and his life in the group until forcibly extracted by his family and friends. The film was based on the nonfiction book Moon Webs by Josh Freed and was directed by Ralph L. Thomas. It was released on DVD on June 20, 1998.

All of the elements of the camp begin to have an effect on David mentally. He graduates and is put to work as a volunteer laborer for the cult. In an especially powerful scene he vomits up a hamburger and malted which he had just eaten in violation of cult dietary guidelines.David sets out to work, led by cult leader Patrick Robert Joy. David is shocked when Patrick lies to a customer but Patrick explains that they are only using Satans methods to do Gods work, and that it is okay because its only Satans money were taking. ........

Source: Wikipedia