Princess Serenity mentioning God

[Lord Mala]

One thing I'm wondering. When Princess Serenity mentioned "this is God's law". I got a question. The age of the Silver Millennium takes place in a time long, long before monotheistic religions were around. What did she mean? I mean, it takes place thousands and thousands of years ago unless she might be referring to ancient pagan religions but I think the Silver Millennium takes place before pagan religions existed too and I highly doubt she would be referring to dark gods such as Queen Metallia, Pharaoh 90 and Wiseman.

[PRangerX]

Many religions refer to the beings they worshio as God. Its not farfetched to believe that there would be religion on the Moon. Even a monothestic one.