Why do we need to continuously lay emphasis and warn against the false gospel preachers? Because this is so important that Jesus mentioned it first and foremost among the list of the signs of the end time.
Matthew 24: 3, “Now as He sat on the Mount of Olives, the disciples came to Him privately, saying, “Tell us, when will these things be? And what will be the sign of Your coming, and of the end of the age?” 4 And Jesus answered and said to them: “Take heed that no one deceives you. 5 For many will come in My name, saying, ‘I am the Christ,’ and will deceive many.”
Many are ignorant of this truth and so many are being deceived by the false ministers’ prophetic declaration, prosperity preaching, and pompous lifestyle.
When the Bible talks about end time false prophets, does it means they will come in a strange, dirty way? No, the end time false prophets would come in a friendly and lovely way. These false prophets are the prioritized prosperity preachers everywhere, they are the motivational speakers, the miracle prioritized preachers, the problematic prayer ministers, the luxurious preachers, and the money making ministers.
As many Jews were waiting for the coming of Elijah before the earthly ministration of Jesus Christ, they didn't believe John the Baptist was the Elijah to come as the forerunner, they are still waiting till today, and so also as Jesus predicted many signs which would happen before His second coming, false prophets are one of the major signs of His imminent coming.
These false prophets are already everywhere now, and if you care for the truth, they are the prosperity preachers everywhere, they are the motivational speakers, the miracle prioritized preachers, the problematic prayer ministers, the rich ministers, the luxurious preachers, and the money making ministers everywhere today.
These false preachers are feeding people with spiritually poisonous messages by capitalizing on your indulgence; they know what you want and so they major on those things that will attract you just as candy attracts kids but not well for their health. Apostle Peter said, “By covetousness they will exploit you with deceptive words” 2 Peter 2:3.

OP nice one!!