How do we know that false prophets exist?

The existence of false prophets is clearly outlined in scripture, warning believers to be vigilant. In 2 Timothy 4:3-4, Paul foretells a time when people will not endure sound doctrine and will turn to teachers who cater to their own desires, seeking out fables rather than truths. This reflects a deeper spiritual condition where individuals, disconnected from God's grace, crave lies that affirm their desires instead of confronting their need for repentance and salvation. Therefore, believers must be discerning and adhere to the truths of Scripture to guard against such deception.