He affirmed their legitimacy in non-ecclesiastical matters. Paul recommended social cooperation, both inside and outside of the institutional church. His argument for the work of the law in every heart can be used to justify the idea of non-Christian civil government as a default position, but Paul offered no case against theonomy as the civic ideal. It is the ideal for the church. The church is superior to the State as a source of justice, as he made plain in Romans 6.
Cooperation is a fact of life.
Without the cooperation of the modern division of labor, most people wouyld die. But most men need to believe in something to put their faith in that is higher and more personal than the free market. The same is true for their faith in providence in contrast to the survival of the biologically fittest. They want to believe in cosmic personalism. He is the source of order.