Hueco Mundo Arc

I'm confused. So Aizen is now allmighty? What kind of god was he for Gin?

I'm confused too. If everyone dies before they get to Soul Society and you can't find your family there, how is Byakuya part of a noble family? Did his family commit mass suicide and they all got to SS together? And if he develloped a family in SS with other people that weren't his Living Family, was he born there?

I read on Wikipedia that Renji was born in a rough part of Rukongai, but then I read he died as a child. Are people born in Soul Society, or just go there when they die?

HOWCAN YOU COME FROM A NOBLE FAMILY IN SOUL SOCIETY??