I thinks its most probable that God is an energy entity, probably the source of all energy actually.
Sex and gender is there so material creatures can reproduce, ie create more of its kind to "fill the earth" (bible).
Humans may become Immortal after Armageddon then sexuality will cease to exist, especially if the world is overfilled.
Jesus hinted on this when asked about who a divorced women will be with in paradise after remarrying, after her husband died. Will she be with her first or second husband. Forgot the answer but it was odd, im sure someone can be bothered to look it up, I can´t at the moment.