God created life for us to cooperate, and learn Oneness; yet then accusative (satanic) & slanderous (devilish) qualities infested reality - So God created a system to filter them to the lower dense dimensions; where reality can then be recreated without issues.

God is the Source of all reality, and so it is both omniscient (knowing everything), and omnipotent (having unlimited power); where it already foresaw everything that will ever take place, before reality was created - Where God needed to test who would respect what the meaning of life is, when not given precise instruction.