Complex sentence: The most famous leader of this religion was "Василий Семенович Лубков" Vasiliy Semionovitch Lubkov who declared himself a living god and the Zar of the 21st century, while declaring all of his competitors for this position as liers.
Split into simpler sentences: The most famous leader of this religion is "Василий Семенович Лубков" Vasiliy Semionovitch Lubkov. Who declared himself a living god and the Zar of the 21st century, while declaring all of his competitors for this position as liers.