Found just five times in the New Testament, the Greek noun “antichristos” meant “Antichrist” or “anti-Messiah.”
Many believe the word “Antichrist” is found throughout the Bible, especially in the book of Revelation, but this idea is false. The Apostle John did use the word “antichrist,” but he never used this term in the book of Revelation. Many people would also be surprised to learn that the Bible speaks about “antichrists” (plural)—see 1 Jn. 2:18—and that John said “many antichrists” existed in the first century (1 Jn. 2:18).
John used the word “antichrist” to describe those who “deny the Son” (1 Jn. 4:3). For the other two passages that use this noun see 1 Jn. 2:22; 2 Jn. 7.