Matthew 13:15 For this people's heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes and hear with their ears, and should understand with their heart, and should be converted, and I should heal them.
Rather than deal with inconvenient truths, they hire to themselves preachers who will tell them only what they prefer to hear, and according to what the statistics show, such preachers are doing quite well financially. When Paul, and the other Bible prophets speak of sound doctrines, they are not speaking only of the need to keep all of the commandments of God, but they are also referring to those truths contained in eschatological prophecies.
Many of these particular truths which pertain to last day events, as a general rule, do not jive with the secular mind that is distracted with consumerism, and the need to “make it.” For instance, the prophecies which point forward to the coming kingdom of God, by which Jesus will put all earthly kingdoms into reverse, by utterly wiping them out and setting up a kingdom of righteousness will almost certainly be met with scorn and violence by most traders on Wall Street.
Thus, with the prevailing mindset of worldliness and materialism persons who dare to preach the present truths for our time, might very well find themselves ostracized, or sidelined by society, hence the reason why Paul warns the Christian of a time when sound doctrines would not be tolerated.
Daniel 2: 44 And in the days of these kings shall the God of heaven set up a kingdom, which shall never be destroyed: and the kingdom shall not be left to other people but it will break in pieces and consume all these kingdoms, and it shall stand forever.
May The Lord add His blessing to the study of His word. God bless!