Morals and Natural Law

It does not take religion to see that morals do not change over time. In other words, what might have been bad to do years ago, is still bad to do today. Natural Law helps us realize this. Take, for example the eye. We know that the nature and purpose of the eye is to help the person see. Suppose an object gets lodged into the eye. This would hinder the eye from fulfilling it's purpose. When this happens, it would be considered an evil. But suppose that one goes to the eye doctor and helps that person see again. That would be considered a good. What helps a thing come to fulfillment is good and what hinders a thing from its fulfillment is bad. So when it comes to ethics, what determines good from evil would be weather or not that action helps that person and society obtain its purpose. Does it go against its nature or not.
Without religion, we can see we are made for community. In order for society to build, reproduction needs to happen. Darwin understood that. This requires a male and female, a community of two persons. Moreover; a child cannot feed itself. The mother needs to look after the child. So the mother and father needs to look after the common good of that societal unit. Sociologists should understand that. So we need community and to do the common good for the community of humanity. Murder is bad for society, just like a thing lodged in the eye is bad for the eye. Their purpose is defeated. That is why contraception, abortion, homosexuality, pre-marital sex, fraud, dishonesty, jealousy and anything else that hinders the building up of humanity is bad. It wounds society.
That is where God comes in and offers us healing. Note: This was just pure reasoning. Pagans believed this. There is more reasoning which comes from God. God's reasoning is not natural like the reasoning above. It is rather supernatural. So from the religious point of view, it still comes up short, but it is not wrong.

The Relationship Between State and Religion

The motto today is, "Keep your religion out of the state!" To a certain degree this should be true. However, this has been lately understood that all religion having anything to do with a government body is a necessary evil. Simply put, to utterly separate religion and state is impossible. As soon as a religion exists in a state, there is necessarily a relationship between the two. The state has an obligation to protect the rights of religion and the religion has a duty to respect the authority of a given state. This was witnessed by the early christian martyrs and giving "to Cezar what belongs to Cezar" (MT 22:21). A given state or country has an obligation to allow commerce, protect its citizens and their properties. This duty involves morals. It is religion that serve the people in this capacity. The religion of our leaders is what governs them and guides them in making the laws that govern the morals of the state. If there is no religion in the state or it's leaders, what will govern them? Will other people? But who would watch the ones who watch them? Only a final judge who see's all things and knows all things and whom every person is accountable to at their last breath can keep our leaders accountable, even behind closed doors. Coming to this conclusion, religion is necessary, so long as it is truly guided by God.