Jesus warns us about false prophets who come in sheep's clothing. When we hear the word "prophet" we might think of someone who predicts the future, but foretelling the future was only one function of biblical prophets, the primary responsibility of a prophet wasn't to foretell, it was to forthtell - to speak the word of the Lord to the people. A false prophet is anyone who teaches, leads, or influences in the name of the Lord but what they're bringing isn't from the Lord.