This comes up quite a lot in birth control discussions, and evolution discussions. When the Pope produces a serious document, like an encyclical, or a Bull of Excommunication, he is speaking with the Voice of Jesus, and establishing church policy. When he speaks ex cathedra, he is not. See the Catholic Encyclopedia if you need more details.
This is a lie. In fact the Church never speaks the "Voice of Jesus" and does not claim to do so. You fail to provide the requested proof because you realize that you are full of sh-t.