Why did God require a sacrifice of Himself to Himself?
Well its either because the omnipotent, omnipresent, omniscient god of the Bible failed to find a rational solution to the problem that didn't involve blood sacrifices, or, more likely, the culture of the time were really into sacrificing shit, you name it, animal, mineral or vegetable, they'd sacrifice it regardless.
Times haven't changed much - people still sacrifice things all the time, politicians often do it with their decency, integrity and creditability.
Well its either because the omnipotent, omnipresent, omniscient god of the Bible failed to find a rational solution to the problem that didn't involve blood sacrifices, or, more likely, the culture of the time were really into sacrificing shit, you name it, animal, mineral or vegetable, they'd sacrifice it regardless.
Times haven't changed much - people still sacrifice things all the time, politicians often do it with their decency, integrity and creditability.

