Evil is a spiritual reality that can have a physical presence. It is not something that any of us ever want to feel. If evil is within us, the power of God is not. They cannot coexist. God is all light.
Evil is pure darkness.
Where there is light, there is no darkness and where there is darkness, light does not exist. The simple plan of Hank, Lou, and Jacob failed miserably and had devastating results because it was based on an ungodly desire. The moral questions that arise in life do not have to be difficult ones to answer. God has already provided all the answers for us. All we have to do is follow His plan.