John speaks of the arrival of the antichrist, the ones of the Trinity, God incarnated who pretended to be the son, and now is God spirit, and whoever has this spirit, turns into a god and thinks he can change the Law and makes Jesus and his father look like liars, deceivers pretending to be son when He is the father. Also doesn’t accept Christ, the envoy, son of God. The Lamb as it says in 1st John 2-
22- Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son.
Read 1st John 4- 1-6- John 17- Says Jesus:
3- And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.
Daniel, like John, alerted about the great beast, 1st and 2nd, that will merge and said how to defeat the tribulations, persecutions and death. Rev 13- 1-10 (1st Beast-Roman Empire), who persecuted the Christians for over 300 years.Rev.
10- He that leadeth into captivity

shall go into captivity: he that killeth with the sword must be killed with the sword. Here is the patience and the faith of the saints.
Here is the perseverance and fidelity of the Saints. 2nd Beast - Rev. 13, 11-18 (seemed a Lamb, but spoke as dragon), with the persecution of the church, seduces Christians and takes over the church, and there went another 1000 years of horror histories, in the name of God, during these times there was gloom, since God hid his church for 1260 years and left it for the great Babylon. Rev. 17.
And in the time of gloom in century VI, merged the goat, Muslim religion created from Judaic religion who didn’t accept God’s lamb.
The corrupted Roman Christian “church” that only didn’t destroy the Bible because God didn’t allow it. In century XV, at the Reform, the Bible started to have some freedom with a lot of fight, since there how many holy wars