What does it mean???
For Christians, I imagine it is to uphold the laws of God, as laid down by himself incarnate in Jesus.. necessary seeing as his earliest followers, ignored the rules He originally set, quite merrily and bloodily, laid down as Commandments, .... heaps of 'm.. !! so He had another go, and Himself, as Jesus, had lots more luck the second time around. So successful, that they still try to uphold , and spread them, to this very day.!!
For non-Christians.... ?? manage Christians as best as possible.

Interestingly, since I switched Browsers.... I now get the red squiggly line when you have miss-spelled something.... and it seems non-christian is considered incorrect but non-Christian spot on.
My BROWSER is a christian construct...!!!!!!!!