The earliest written form of the Germanic word God (always, in this usage, capitalized) comes from the 6th-century Christian Codex Argenteus. The English word itself is derived from the Proto-Germanic * uan. The reconstructed Proto-Indo-European form * ghu-to-m was likely based on the root * ghau()-, which meant either "to call" or "to invoke". The Germanic words for God were originally neuterapplying to both gendersbut during the process of the Christianization of the Germanic peoples from their indigenous Germanic paganism, the words became a masculine syntactic form.
Try to answer this question if possible (otherwise reply "unanswerable"): Where the first Germanic words for God masculine or feminine?
neuterapplying to both genders