From Albert M. Wolters' Creation Regained:

There are two ways in which God imposes his law on the cosmos, two ways in which his will is done on earth as in heaven. He does it either directly, without mediation, or indirectly, through the involvement of human responsibility. Just as a human sovereign does certain things himself, but gives orers to his subordinates for other things, so with God himself. He put the planets in their orbits, makes the seasons come and go at the proper time, makes seeds grow and animals reproduce, but entrusts to mankind the tasks of making tools, doing justice, producing art, and pursuing scholarship. In other words, God's rule of law is immediate in the nonhuman realm but mediate in culture and society. In the human realm men and women become coworkers with God; as creatures made in God's image they too have a kind of lordship over the earth, are God's viceroys in creation.