>> Why do you suppose that in Genesis, god take on a plural form. ;-)<
Father, Son, Holy Spirit
>>>Also why did "god" require blood sacrifice? Seems a bit odd no?<<
Blood covers sin.
Your trying to figure out something that created every last molecule, the human body that we are just now starting to get a grasp on how complex it is, the delicate balance of the earth not coming to close to the sun or too far away. Its like trying to explain to a gnat how a 747 flys.