Ezekiel 33:31-33

31So my people come to you in crowds, sit in front of you, and hear your words, but they don’t obey them. Their mouths go on passionately, but their hearts pursue dishonest profit.

32Yes, to them you are like a singer of passionate songs who has a beautiful voice and plays skillfully on an instrument. They hear your words, but they don’t obey them.

33Yet when all this comes true  — and it definitely will — then they will know that a prophet has been among them.”