The person himself may not be so evil, but because of this environment or these ancestors, he cannot help felling hatred, jealousy, and negative things. Even the government can help in making a better environment for its people. They can provide a more moral, more religious environment which can help people to be free from evil influence. Lucifer was a spirit. There is no difference between the spiritual and the physical as far as power is concerned.
Energy is power.
A child is created by energy. The fact that the relationship between Lucifer and Eve was a spiritual relationship means simply that it was invisible to physical eyes. It is the same energy, only stronger and higher. Don't say that it was spiritual and therefore no blood relationship was involved. It was even stronger than a blood relationship.