I come from the same heritage as the Swiss Guard. Fidelity should be inbred in me from the days when Switzerland was one of the poorest nations in Europe; the young men of that Alpine nation hired out their skill with weapons and their loyalty. I am no longer for hire, but my wife knows I am loyal.
It is part of Western Civilization now. A young woman who worked in the Peace Corps in Senegal observed how in that nation, women who were married to one man sold their sexual favors for a few cents in order to have money for shopping. Senegal definitely does not have a Judeo-Christian tradition, and a man in that Muslim country can have several wives.
We are not that good at keeping up our own tradition, but we try. We work at it, and in the end, the Word is still there.