To me it is the brotherhood of man, guiding one another in the way of goodwill, service and honor with humility, or building one’s character with a good foundation. Many phrases cone from it ( like, “on the level”, “square up”, a “true wheel”, “plumb line”, “square, straight, level and true”). This is in the first few pages of papa’s Bible. https://image.nostr.build/e764b5441f2ee8d041553697b450ac8a1a5e013bd8707b63598eb254205fb144.jpg