We must realize that this world is not God's world! The systems that operate our cultures are not His. The world's systems generate and sustain our government, politics, entertainment, fashion, religion, business ethics, medicine, health care, culinary tastes, social programs, institutions, education, science, technology, economics, and use of power. These systems have formed much of humanity's belief systems and attitudes, which, in turn, have shaped human conduct. Yet this world and its systems are so appealing! God in His wisdom advises us not to waste our love on them because they have no future. In fact, this world is so corrupt that the whole thing will be destroyed and replaced when God invokes the restitution of all things. The basic reason all must be destroyed is because at its very foundation stands a destroying and antagonistic spirit, satan the devil, the ruler of this world. Satan is a destroyer, and his way is at best a deadly mixture of good and evil. So strong is God's warning about the world that He urges us to come out from among them and be separate, not to touch what is unclean, promising that He will receive us and be a Father to us, and we shall be His sons and daughters. Not one part of this system will be carried over into the world to come, for the whole thing is unclean, something that contaminates and defiles, rendering unholy those who are touched by it. The world is most dangerous to Christians when it seems friendly and tolerant, even producing apparently good things, but God declares it still unclean, a poisonous brew of good and evil. In these matters, it is God's judgment that counts.