Theistic evolution, on the other hand, accepts the naturalistic concept about billions of years of life and death, extinctions, the survival of the fittest, and so on, and its advocates claim that this was the means the God of the Bible used to create all life-forms on our planet. Some claim that God got the process started and then stepped back, letting the laws of nature take over, which explains why billions of years of chance and luck were needed to bring intelligent humans into existence. Others assert that God not only started the process but at certain times intervened in order to keep the otherwise haphazard mechanisms going in the right direction. Still others argue that God didn’t step into the process until He breathed a soul into Adam or into some prehuman, which then made this being fully human, formed “in the image of God” (Genesis 1:27).