I am a designer and I use that principle all the time in design. Has nothing to do with god.
Its like how when it comes to visuals and say slogans or taglines - groups of 3 work best with the human mind.
i.e. Just Do It. I'm loving it. Imagination at work. Every Little Helps. Finger lickin' good. Taste the rainbow. Snap Crackle Pop.
BIG WARNING ALL - The human mind finds patterns even when they are not there. I.E. seeing Elvis in a piece of toast. THIS IS A GIANT PLUS as a result of evolution, and it is a GIANT NEGATIVE because that's why we have superstition and the persistence of religion.
Listen to this its good: https://www.scientificamerican.com/podcast/episode/brain-seeks-patterns-where-none-exi-08-10-03/
FYI: Did you know that when it comes to Beauty, and this works in all cultures. The people we generally feel are the most beautiful are mathematically the MOST AVERAGE.
If you take a million faces - and digitize the size and location of all features, the AVERAGE of all those are the people we feel are the most beautiful. I thought that was very interesting.