There are somethings that do not need to be designed by God. For example, God IS light and therefore light could not be designed without designing God. God IS righteousness and therefore righteousness could not be designed without designing God. God IS life and therefore life could not be designed without designing God. God cannot create another God equal to Himself, therefore all created beings are necessarily dependent upon God for righteousness, light and life as God IS the source of these things which could not be designed without designing God. Therefore, their opposites, darkness, death and unrighteousness (sin) were not created by God either but are simply the absence of God who IS light, life and righteousness. The Bible says that iniquity was "found" in Satan and that sin entered the world by one man and death by sin. Sin IS the absence of righteousness and entered by choice. God designed responsible choice which necessarily permits wrong choice or there is no choice at all.