Jeremiah 23:16

Therefore, thus saith the Lord of hosts concerning the prophets, the leaders in wickedness, the seducers of the people, Behold, I will feed them with wormwood and make them drink the water of gall, poison water, Cf. Jeremiah 9:14; for from the prophets of Jerusalem is profaneness gone forth into all the land, so that profligacy was practiced everywhere; the Holy Land was desecrated and the Word of the Lord blasphemed, even as it is today in consequence of similar behavior on the part of men who call themselves ministers of the Word.

Thus saith the Lord of hosts, in warning the true believers against the deception of the false prophets. Hearken not unto the words of the prophets that prophesy unto you; they make you vain, deceiving them, seducing them to the vanity of idolatry; they speak a vision of their own heart, revelations of their own imagination, and not out of the mouth of the Lord, their so-called messages to the people being made without authorization of Jehovah.