Secular law.
Um... in the Roman empire, prior to Christ, women were views as nothing more than property by the 'secularist' of the day. It was Jesus and Paul who said a man should lay down his life for his wife.
In the Anglo-Saxon years, after the Dawinian view, black-Africans were thought to be lower species, that we white people had evolved to a higher being. This is why slavery of them was accepted by the secularist. It was the Christian people in our country that said according to God, all men are created equal, and fought for freedom of our African brothers.
The first health care institutions were made by people following the Biblical law that we should help our fellow man. Not secularists.
It was Christians believing God wanted us to study and learn about him and his world, that created institutions of higher learning. Not secularists.
So many things you know, and enjoy, and take for granted today, exist not because of secular law... but because of the Laws of God.
The very fact you have the right to vote, is a testimony of our founding fathers who didn't follow the secular laws of the day that said the King of England was ruler of our land. Rather, that our God was our King, and under him we have freedom from tyranny.