And many false prophets will appear and deceive many, – Matthew 24:11
For false messiahs and false prophets will appear and perform great signs and wonders to deceive, if possible, even the elect. – Matthew 24:24

For “false” to have meaning, there has to be a true. Counterfeit money would not be dangerous if it didn’t mimic real money. I have a $3 bill in my wallet. I’ve pulled it out on occasion to pay for something just to watch the reaction of the clerk. I also have a $1 million dollar bill in my wallet. I’ve asked people to give me change for it for years.

They are just a joke, and everyone gets a laugh. No one is deceived. If however I tried to pass off a $20 bill or a $100 bill that was a copy of a real one, the laughing would stop. I could be arrested just for having false (counterfeit) money in my possession.

The fact that we are warned about false prophets points to the fact that real prophets exist. The real Messiah is coming back and so are God’s true prophets. So satan wants to deceive the elect by producing counterfeits.

Don’t be afraid, just learn the prophetic gift well, and you will be able to discern the false more easily. Those who reject prophets and prophecy are not on solid ground. Fear is not a good basis for a theological framework. If you were so afraid of having counterfeit money that you rejected all currency, you would be a poor person. The same is true spiritually for those who reject Prophecy. See 1 Cor. 14:1