Example 1: If some 'man of God' proclaims you can get to Heaven by paying indulgences or tithes.
This is opposite of what Jesus taught, thus it is not of Christ, but antichrist.
Example 2: If some 'man of God' proclaims you will be taken out before the tribulation.
This also is 180 degrees in opposition of what Jesus taught, thus it is not of Christ, but antichrist.
Example 3: If some 'man of God' proclaims your body will disappear leaving clothes behind.
Paul teaches that those who teach this are fools. "Thou fool....Brethren, flesh and blood cannot inherit the kingdom of God."
The above examples (and many more) were taught to the masses and shockingly accepted due to; a fear of questioning apparent authority, laziness to search the word and or misinformation from the 'man of God'.
Dearest children be not passive in this regard, the altering of Christ's prophetic teachings are damnable with the loss of salvation. Pick not up that doctrine that feels or sounds palatable. Remember, it is "he that overcomes to the end" that shall be rewarded. Not he that carelessly waltzes through life, feasting on and funding blasphemous doctrine, whose fruit will kill the unprepared mind and body.
What can we say? Should never a rebuke be given the 'man of God' or all of Christendom gone astray? Far from it beloved, in fact judgment always starts at the house of God. When the so-called 'anointed' are teaching heresy, they will be touched and labeled as Paul states: fools, bastards and liars.
How would you react if 95% of the clergy taught as dogma that: anyone could go to Heaven if they were simply 'nice' to other people? Your blood would boil over with the fury of righteous indignation. Why, because it is a lie of satan and would send people to hell. Thus it is with any false doctrine. Regardless of the intent from the 'man of God'; be it ignorance or trickery, his message is a false doctrine and a malignant lie. With only a one degree shift of truth, over time you are miles of course. The pre-tribulation teaching is a lie and will send billions to hell. Especially when believers find themselves going through the tribulation period, now thinking the rapture was only a fable. The fruit of poisonous teachings and false indoctrination will take it's toll; when the flock scatters, they take the mark, fulfilling the falling away. They will only remember the ingrained words of the television star teachers or their country club's denominational doctrines. They will have forgotten the Lamb's words, "After the tribulation of those days... will I gather mine elect". Neither shall they consider the prophet Isaiah, "Hide for a little while, until the indignation pass".
Before a Fall
These 'men of God' attempt to shield themselves with the scripture that says, "the gifts and calling of God are without repentance." Agreed, the 'man of God' should not feel guilt for being called into a particular position. However, this verse is not saying, never admit error, but simply not to 'turn away' from your calling. Once called you are called, anything less is disobedience as seen in the model of Jonah. However the lies of false teachings and blasphemies, demand the foreign concept of repentance from these denominationally programmed, stiff necked dictators.
One of the greatest iconoclasts of Church History, was a Catholic Priest that turned out to be the father of Protestantism, Martin Luther. He called the Pope the antichrist incarnate, devil and satan many times. He also called the entire Church, the seat of satan, the mouth of hell and the most shameless of all brothels, [ whore houses ]. These names were used of God to capture the deaf clergy's attention, awake the glossy-eyed sheep and stress the importance of their errors. Not unlike the 23 names Jesus and others called the Clergy;
Evil, Vipers, Cunning, Serpents, Rotting Corpses, Ravenous, Hypocrites, Stiffnecked, Deceivers, Excessive, Extortioners, Covetous, Fools, House Devourers, Suspicious Yeast, Blind, Bastards, Uncircumcised, Liars, Wicked, Wolves, Children of Hell and Children of satan.
Greater works than these will you do also.
Better is a poor wise child, than an old foolish king that will not hear correction.
Luther makes a brilliant observation, that the Church has developed "delicate ears". In our present day vernacular, that means 'politically correct' ears. Which doctrine says, 'Never offend anyone at anytime'. In today's churches, most would pass out or call for an excommunication, if they ever heard a rebuke from the Holy Spirit.
Luther's rebukes of the day were the zenith of creative conflict, used to shake foundations, rather than suffering lies of monolithic uniformity.
His positions were unrepentant, through scriptural wrath and righteous indignation. Keep in mind Luther was taking on the entire host of the only Church on earth. Popes, Cardinals, Bishops, Priests and it's entire congregation with death threats abounding.
I have long since fired the Catholic Church from being my spiritual advisor decades ago. Thusly, I would count it a blessing to be scorned of all, including the entire sect called Protestants, to be in the company of poetically creative lie chasers as Jesus, Paul and Martin Luther.
Works Of Luther
Martin Luther (1483–1546). Christian Liberty.
Article IV: Of the Papacy
...This teaching shows forcefully that the Pope is the very Antichrist, who has exalted himself above, and opposed himself against Christ because he will not permit Christians to be saved without his power, which, nevertheless, is nothing, and is neither ordained nor commanded by God. This is, properly speaking to exalt himself above all that is called God as Paul says, 2 Thess. 2, 4. Even the Turks or the Tartars, great enemies of Christians as they are, do not do this, but they allow whoever wishes to believe in Christ, and take bodily tribute and obedience from Christians.
Martin Luther, Schmalkald Articles