For even when we were with you, this we commanded you, that if any would not work, neither should he eat.
Genesis 3:17-19
And unto Adam he said, Because thou hast hearkened unto the voice of thy wife, and hast eaten of the tree, of which I commanded thee, saying, Thou shalt not eat of it: cursed is the ground for thy sake; in sorrow shalt thou eat of it all the days of thy life... In the sweat of thy face shalt thou eat bread,
Paul's work-or-not-eat principle invokes the Genesis 3 Adamic labor ordinance as its constitutional background. The Genesis 3 curse established that bread would come only through the sweat of the face — work is the divinely ordained means of provision in the post-fall covenant order. Paul applies this Genesis principle practically: those who refuse to work are violating the Adamic creation ordinance that established labor as the constitutional condition for eating, making idleness a creation-order covenant violation.