Oomis: I don’t think the Torah ever uses the feminine voice (that I can think of). There are a few cases where Hashem is described in the feminine and the Gemara/Rishonim comment on them. But when it uses Lach instead of Lecha and things like that, those are usually grammatical syntax changes, not changes in masculine or feminine.
Charlie: There are lots of things in the Ibn Ezra that would be considered Apikorsus if theyr were said today. I’m not sure what your point is.