His actions are that of a living, thinking intelligence. A small flaw would not be permissible in a Universe with the high levels of energy involved. He requires his subjects to be perfect, since they were once, in his image of perfection. The first human couple, Adam and Eve, were to be father and mother to a host of perfect humans. Since genetically their offspring would have been born perfect, the notion of brother and sister marriage did not need mentioning in the initial part of Genesis.
Evolutionists face the difficulty of explaining the beneficial effects of mutations.
They usually result in an individual experiencing rejection by the majority. Also, mutations seriously incur life threatening results. The rebellion of Adam and Eve introduced a spiritual flaw into a perfect creation of God. As the universe operates through perfection, a flawed creation has only one destiny, death or non-existence. Adam and Eve lost the prospects of presiding over a kingdom of God.