The Apostles wrote most of the New Testament, which is part of the Holy Bible, so how do you "check" the Apostles "against" what the Apostles wrote? That makes zero sense.
Note that it does make sense in light of the Old Testament (Acts 17:11, Acts 26:22).
That is, the apostle Paul taught everyone what the Old Testament had taught regarding the Messiah, the Christ (Acts 26:22-23), but which had not been understood by anyone (Luke 18:34, Romans 16:25-26) until Jesus Christ explained it to His apostles after His resurrection (Luke 24:44-47, Galatians 1:12).
And we are assured that at least some people in the Church will continue in the truth until Jesus Christ's future, Second Coming. For there will be true Christians who will still be "alive and remain" at that time (1 Thessalonians 4:15-17). But the way that they will continue in the truth will not be by replacing God Himself with Church leaders as their source of truth. For Church leaders are fallible (e.g. Matthew 16:23, Galatians 2:11-14, Luke 22:34). It is only by sticking close to God's own infallible Word the Bible (2 Timothy 3:16, Acts 17:11b, John 17:17) that Christians can be sure not to be led astray by any Church leaders who might be teaching false doctrines which contradict God's Word (2 Timothy 4:2-4; 1 Timothy 4:1, John 8:31b, Mark 8:35-38).
. . . Christians aren't going to give up Christ's Resurrection . . .
Biblical Christians will not (1 Corinthians 15:1-4). But note that the whole reason Paul wrote 1 Corinthians 15 was to counter the Corinthian "Christian" teaching that there is no resurrection of the dead (1 Corinthians 15:12).
So, regarding post #409 above, if a secretly-apostate pope does become the future Antichrist's False Prophet (of Revelation 13:11-16, Revelation 19:20, and Revelation 16:13), then adherents of Catholicism will have to decide what their ultimate source of truth is: Is it the pope and the RCC, or God and the Bible? Many adherents of Catholicism who know God and the Bible well, and hold to them as their ultimate source of truth, will no doubt be utterly aghast at the false doctrines of a False Prophet pope. Such adherents of Catholicism could demand that he be removed for heresy, and apostasy, and that the cardinals elect a new pope. But other adherents of Catholicism, including many cardinals, bishops, and priests, could be deceived (along with most of the rest of the world) into believing the False Prophet pope's false doctrines, because of his ability to perform the most amazing miracles (Revelation 13:13-14, Revelation 19:20; cf. Matthew 24:24).
And so a great schism could arise within the RCC. Compare the Akita prophecy:
"The work of the devil will infiltrate even into the Church in such a way that one will see cardinals opposing cardinals, bishops against bishops". Many adherents of Catholicism could follow the False Prophet pope, while other adherents of Catholicism could reject him, and elect their own, new pope (or reinstate a former pope who is still alive), whom they could declare to be the "True Pope". But this new (or reinstated) "True Pope" could then be murdered, along with many of his followers, by the False Prophet pope's soldiers. Compare the Third Secret of Fatima:
"he [the pope] was killed by a group of soldiers who fired bullets and arrows at him, and in the same way there died one after another the other Bishops, Priests, men and women Religious, and various lay people of different ranks and positions". Could the soldiers firing "arrows" be the Vatican's Swiss Guards, whose weapons and colorful uniforms hark back to the Middle Ages?
After this slaughter, the False Prophet pope could manage to retain the papacy, and full control of the Vatican, and through his (deceived) cardinals, bishops, and priests, retain full control of all RCC cathedrals, parishes, churches, etc., throughout the world. And when the Antichrist (the individual-man aspect of Revelation's "beast") obtains power over all nations, he and the False Prophet will make war against true, Biblical Christians (whether they are adherents of Catholicism or not) throughout the world, and will physically overcome them and kill them (by beheading) in every nation (Revelation 13:7-10, Revelation 14:12-13, Revelation 20:4-6, Matthew 24:9-13).
It is only when the Antichrist has completely broken the physical power of the true Church (which consists of all true Christians, whether they are adherents of Catholicism or not: Ephesians 4:4-6) that the future Tribulation will end (Daniel 12:7b), and Jesus Christ's Second Coming will immediately occur, at which time He will physically resurrect and rapture (gather together) the Church (Matthew 24:29-31; 2 Thessalonians 2:1-8, Revelation 19:7 to 20:6), of all times. And at His Second Coming, Jesus Christ will tread the winepress of God's wrath alone (Isaiah 63:3, Revelation 19:15-21), and so He/God will get all of the glory for defeating the power of evil on the earth (Deuteronomy 32:39-43). For He/God will not share this glory with the Church (cf. Isaiah 42:8-14, Isaiah 26:18).