Complex sentence: The Antichrist is a Christian concept based on interpretation of passages in the New Testament, in which the term "antichrist" occurs five times in 1 John and 2 John, once in plural form and four times in the singular.
Split into simpler sentences: The Antichrist is a Christian concept based on interpretation of passages in the New Testament. In the New Testament, the term "antichrist" occurs five times in 1 John and 2 John, once in plural form and four times in the singular.