You cannot discredit truth. Truth is truth.Conversations With God, Book 3, Neale Donald Walsch.
Truth is truth no matter what clothes it is wearing or out of whose mouth it is spoken. Question is: can you hear (handle) the truth or are you too busy stoning the messenger? Many faithful believe the Pope, the Dalai Lama, Mother Theresa, Dr. Martin Luther King Jr., the Buddha, etc. were/are holy messengers of God yet then turn around and condemn the regular people of those same groups because they believe differently or call God by a different name. Ex: Many Protestants recognize and agree with what they Pope may say about a particular subject but still feel that Catholicism is a one way ticket to hell.