Semper Fidelis or Semper Fi in its common usage is the motto of the United States Marine Corp. It was adopted as the USMC motto in 1875, or 1883. The motto’s origin is unknown though it was common in Western Europe for hundreds of years before.
“Servants, obey in all things your masters according to the flesh, not with eyeservice, as men-pleasers, but in sincerity of heart, fearing God.” Colossians 3:22.
“Do not let your beauty be that outward adorning of arranging the hair, of wearing gold, or of putting on fine apparel…” 1 Peter 3:3.
“But let it be the hidden person of the heart, with the incorruptible ornament of a gentle and quiet spirit, which is very precious in the sight of God.” 1 Peter 3:4.
“Therefore, if you died with Christ from the basic principles of the world, why, as though living in the world, do you subject yourselves to regulations – “Do not touch, do not taste, do not handle…” Colossians 2:20-21.