Ezekiel 33:31-33

31So they come to you, as people come, and sit before you as My people and hear your words—but they do not do them—for with their mouth they express doting love, but their heart goes after their own dishonest gain.

32Look, you are like a love song to them, one who has a beautiful voice and can play well on an instrument. They hear your words, but do not practice them.

33When this comes to pass—behold, it is coming—they will know that a prophet has been among them.”