If you desire the spleen, and will laugh yourselves into stitches, follow me: yond gull Malvolio is turned heathen, a very renegado; for there is no Christian, that means to be saved by believing rightly, can ever believe such impossible passages of grossness.
There are no more uses of "heathen" in the play.
Show samples from other sources
He explained what he meant by telling me a story which sounded a little like something out of the Old Testament; but which, so Mike assured me, was a part of the semi-religious folklore of the inland Eskimos, who, alas for their immortal souls, were still happily heathen.
Farley Mowat -- Never Cry Wolf
The heathen island in the West Indies?
Elizabeth George Speare -- The Witch of Blackbird Pond