User blog comment:Maattthhhh/Bleach and Christian Symbolisms IV/@comment-26269901-20161217143025

There are two versions of the temptation story, one where the snake is just another form of the Devil, and one where it's a separate being employed by him. In this latter one the snake at the end loses its legs as punishment.

Aizen is Lucifer, Gin is the snake, the one working for the devil. Gin's weapon is strongly hinting at snakes and his appearance can be both a typical fox spirit or it can remind one of a snake. His role is to cause discord among shinigami, tempting them to disobey. It wasn't just Ichigo and Rukia that had to learn to live under new conditions, all of the shinigami were thrown out of their "heaven" and had to choose sides, either continue to blindly follow orders or use their wisdom.

Come to think of it, it seems Ichigo and his friends were the apple.