In the first letter to Timothy, Paul warns that in later times some will depart from the faith. Some time later, when Paul writes his second letter to Timothy, his tone about Christianity is even more pessimistic, saying that the time will come when people will no longer endure or tolerate sound doctrine.
2 Timothy 4
2 Proclaim the word; insist on it in season and out of season; rebuke, exhort, and exhort with all patience and teaching.
3 For the time will come when they will not endure sound doctrine, but according to their own desires they will accumulate for themselves teachers to tickle the ears.
4 And they will turn away from hearing the truth and turn to myths.
Sound teaching
Sound teaching is what Paul says in 1 Timothy 4:11: “Command and teach this,” namely, that the living God is the Savior of all people, especially of believers (1 Timothy 4:10). This teaching is widely deviated from, and the church even labels the salvation and reconciliation of all as heresy and false doctrine. It is intolerant.
Therefore, Paul urges Timothy to preach the word in season and out of season, encouraging others with patience and teaching (1 Timothy 4:2). This is in contrast to those who cannot tolerate sound teaching and will preach unsound teaching, namely, words they themselves want to hear. Paul urges Timothy:
2 Timothy 1
13 Have a pattern of sound words, which you have heard from me, in faith and love which is in Christ Jesus.
Unhealthy words
Christianity has strayed from this command of Paul. Doctrines quickly arose in which unbiblical concepts set the tone—terms like hell, damnation, Trinity, free will, eternal death, God the Son, and immortal soul. Unhealthy words that we do not find in Scripture, and we should not follow that pattern.
2 Timothy 3
1 But know this, that in the last days perilous times will come,
2 for people will
(…)
5 have a form of godliness, but have denied its power. Avoid these also!
appearance
In the last days will be dangerous times, says Paul. He does not go into the characteristics of the people and which are mentioned in verse 2 to 4 and therefore they have been left out above. Paul is not talking about the secular world, but about that part which has a form of godliness. It seems to be devoted to God, but it is only outside. Appearance, in shape, the believers, because they practice religious practices: use the name of God, say the Bible to believe, visit church services, burn candles, participate in the sacred supper, sing praise songs, etc. But they deny the power of God. The evangel is massively denied by the churches. In fact, we already saw that they no longer tolerate healthy learning.