18 Children, it is the last hour; and just as you heard that antichrist is coming, even now many antichrists have appeared; from this we know that it is the last hour. 19 They went out from us, but they were not really of us; for if they had been of us, they would have remained with us; but they went out, so that it would be shown that they all are not of us. 20 But you have an anointing from the Holy One, and you all know. 1 John 2:18-20 (NASB)
The doctrine of the Roman Catholic Church says that it is the only true church while all others are false. At the same time most solid evangelical Christians I know hold to the truth that the Pope, the Bishop of Rome, is an “antichrist.”….
The word that is translated from the Greek that is rendered as “antichrist” in the New Testament is ἀντίχριστος (antichristos). It is made up of two words, ἀντί(anti), which means “instead of or against,” and χριστος(christos), which means “anointed one.” The ἀντί prefix may be reference to “substitution or opposition.” The word ἀντίχριστος is found only in 1 John 2:18, 1 John 2:22, 1 John 4:3, and 2 John 1:7. Paul refers to a man whom he calls “the man of sin, the son of perdition, and wicked one” in 2 Thessalonians 2:3 and 2 Thessalonians 2:8. He refers to “the one opposing” in 2 Thessalonians 2:4. Most believe that John’s ἀντίχριστος is the same man that Paul is referring to. This man will attempt to assert the fulfillment of God’s Word in himself and will attempt to set up his own throne.
Who Is the Antichrist – Ligonier Ministries