Regarding some of the problems of the end times, the Bible mentions this:
"Now the Spirit clearly says that in later times some will abandon the faith and follow deceiving spirits and things taught by demons. Such teachings come through hypocritical liars, whose consciences have been seared as with a hot iron."
I also wanted to put some more rebukes: "Mark this: There will be terrible times in the last days. People will be lovers of themselves, lovers of money, boastful, proud, abusive, disobedient to their parents, ungrateful, unholy, without love, unforgiving, slanderous, without self-control, brutal, not lovers of the good, treacherous, rash, conceited, lovers of pleasure rather than lovers of God, having a form of godliness but denying its power. Have nothing to do with them. They are the kind who worm their way into homes and gain control over weak-willed women, who are loaded down with sins and are swayed by all kinds of evil desires, always learning but never able to acknowledge the truth. Just as Jannes and Jambres opposed Moses, so also these men oppose the truth, men of depraved minds, who as far as the faith is concerned, are rejected. But these men will not get very far, for as in the case of those men, their folly will be clear to everyone."
It also mentions rebellious people. "For there are many rebellious people, mere talkers and deceivers, especially those of the circumcision group. They must be silenced, because they are ruining whole households by teaching things they ought not to teach, and that for the sake of dishonest gain. Even one of their own prophets said, 'Cretans are always liars, evil brutes, lazy gluttons.' This testimony is true. Therefore, rebuke them sharply, so that they will be sound in the faith and pay no attention to Jewish myths or to the commands of those who reject the truth. To the pure, all things are pure, but to those who are corrupt and do not believe, nothing is pure. In fact, both their minds and their consciences are corrupted. They claim to know God but by their actions they deny him. They are detestable, disobedient, and unfit for doing anything good."
