'Loins' in the Bible

John wore clothing made of camel’s hair and had a [wide] leather band around his waist, and he ate locusts and wild honey.

“Be dressed and ready for active service, and keep your lamps continuously burning.

So stand firm and hold your ground, having tightened the wide band of truth (personal integrity, moral courage) around your waist and having put on the breastplate of righteousness (an upright heart),

for Levi was still in the loins (unborn) of his forefather [Abraham] when Melchizedek met him (Abraham).