Sorcha, to devout Christians, opinions don't matter, theology does.

Here is a quote from the article:

Christians have been wary of sorcery and witchcraft for centuries, viewing them as supernatural powers derived from evil forces. Protestant and Catholic countries persecuted people accused of witchcraft through much of Christian history.

Even today the Catholic catechism warns that ''all practices of magic or sorcery ... are gravely contrary to the virtue of religion.''