God and His covenant law stand between us and all things. Because that is the fact we always meet God as a mediator, whatever we do, wherever we are and remember, a mediator is also a judge. So that God either judges us or blesses us in terms of our faithfulness to His covenant. Thus we are never permitted at any point in all of creation to feel that we have an unmediated relationship to anything. Christ is our mediator with God but also with one another and all things under the sun.