The third-century Roman jurist, Modestinus, captured the common understanding of marriage with the following definition: Marriage is the union of a man and a woman, a consortium for the whole of life involving the communication of divine and human rights. This union and these rights exist, not merely for their own sake, but also and especially for the sake of the inter-generational concerns of progeny and property; with a view, that is, to the conditions necessary for the founding and flourishing of the family. The rights involved are divine as well as human because marriage is generative, and hence pre- as well as pro-political; because what is founded through marriage is, in the twentieth-century language of the Universal Declaration of Human Rights, the natural and fundamental group unit of society.
"We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness. That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it"
"all men are created equal": All men have the same human nature with women the nature for motherhood and men the nature of fatherhood. Combined, both natures are endowed by God for the creation of life.
God must be acknowledged or else there is no basis for liberty and freedom.