A. Jan Marcussen is a preacher, physical therapist, nutritionist, and marriage counselor. He is most known for controversial views and promotion, through writing and other methods, of eschatology and the seventh-day Sabbath. Marcussen has offered to pay $1 million U.S. dollars for biblical proof that the Christian day of worship was changed from Saturday to Sunday. The Seventh-day Adventist Church is reported to have denied any official connection between Marcussen and the church.
Marcussen’s writings includes self-published books by his own Amazing Truth Publications: Two Months to Live; Cousin Henry Potter (and the Terrible Time Machine); and National Sunday Law. The pamphlet Seven Secrets of Family Happiness is listed as published by the “Southern Publishing Association,” however at the Amazing Truth Publications address. The Seventh-day Adventist denominational publisher, Southern Publishing Association, was located in Nashville, TN, and merged with the denominational Review and Herald Publishing Association in 1980.
Marcussen’s 1983 National Sunday Law, by 2016 had reached 41.7 million copies in 70 languages. National Sunday Laws focuses on prophetic apocalyptic interpretations and warnings from the biblical books of Daniel and Revelation. Marcussen encourages its random distribution, and the book is bulk-mailed by its supporters.
- Charismatic Catholic Attack (on God's SDA Church) series
- Roman Catholic Attack (on God's SDA Church) series
- Revelation Studies series
- The New World Order, the Sunday Law, and the 144,000
Jan Marcussen publishes a newsletter that chronicles his claims about advancement toward a civil law requiring worship on Sundays, and also promotes sales of his book National Sunday Law.
Marcussen's National Sunday Law was in part the inspiration for the 2004 low-budget action movie, The 4th Beast: Mask of the Antichrist. Director Nathyn Masters, an alumnus of Chicago's Columbia College, recounts how he desired to create an endtime Christian action film with a post-tribulation scenario as an alternative to such pre-tribulation films as Left Behind.