wsc, It is really quite simple as I will demonstrate with two simple facts as to why it is labeled a heresy.
First, what is the meaning of Heresy?
The word (heresy) literally means "choosing one's own ideas", but now refers to that which is untrue. If Joyce Meyers makes the claim that Jesus had to suffer in hell for our sins and the scriptures teach that the atonement for our sins was finished as Christ was nailed upon the Cross and cried with the triumphant shout "IT IS FINISHED", do you not agree that it falls in the same category as heresy?
I challenge you to find a passage in scripture where it illustrates the torment Jesus suffered in hell according to Joyce Meyers. Once again, was Christ' sacrifice on the Cross sufficient for the remission of sins, OR did Jesus have to suffer additional torture by being confined in hades and enduring the torment of demons? Is this found in scripture? Furthermore I never said that Jesus did not descend into hell to "set the captives free", but that Joyce Meyers unbiblical doctrine of Jesus's suffering in hell was in direct conflict of the preaching of the Cross, thus it is "choosing ones own idea", and that is what heresy is defined as, and showing a disrespect of Gods only begotten Sons finished work on the Cross as being insufficient for the cleansing of sins, is outright blasphemous.
God Bless!