Bible Verses About False Prophets: Out of their own heart

Thus saith Jehovah of hosts, Hearken not unto the words of the prophets that prophesy unto you: they teach you vanity; they speak a vision of their own heart, and not out of the mouth of Jehovah.

How long shall this be in the heart of the prophets that prophesy lies, even the prophets of the deceit of their own heart?

Son of man, prophesy against the prophets of Israel that prophesy, and say thou unto them that prophesy out of their own heart, Hear ye the word of Jehovah: