Strictly means one opposed to Christ. In this sense, John says were already in his time many antichrists, many having the spirit of an antichrist; unbelievers, heretics, and persecutors, 1 John 2:18 4:3. They were characterized by the denial of the Father and the Son, and of Christ’s coming in the flesh, 1 John 2:22 4:3. But the apostles and early Christians seem to have looked forward to some one great antichrist, who should precede the second coming of our Lord, and whom Paul calls "the man of sin, the son of perdition," 2 Thessalonians 2:3. To this passage John alludes, 1 John 2:18. Able interpreters agree that antichrist denotes an organized body of men, perpetuated from age to age, opposed to Christ, and which he will destroy, Revelation 11:1-19 13:1-18 17:1-18.