"The Adamic covenant should not be considered in such narrow terms that it is seen only of the eating prohibition and its consequences. It is also improper to call this covenant a covenant of works. The implication then would be that other covenants are not covenants of works, or that this covenant, which obviously had its inception before the Fall, is not a covenant of grace. Then grace can only be evident in matters which have to do with redemption, which is a post-fall activity.
"Such distinctions should be abandoned. All covenants between God and man should be seen as covenants of grace. The metaphor of covenant portrays a relationship between a sovereign and a vassal. The sovereign is under no obligation to initiate this arrangement. That he does so is a matter of grace. But the vassal is going to benefit from such an arrangement.
"When we see the first biblical covenant in this light we will find that it frees us from the problems introduced by a covenant of works concept. First, it removes the idea that Adam could have worked for his salvation.
"Second, it puts the entire original creation into a different perspective. The creation, with Adam as its head, is seen to be under covenant obligation to the Creator-Sovereign.
"Third, there are implications, in an original Creator-creation covenant, for the concept of free will. Is a creation which is in covenant relationship free to do whatever it wants? When man and the rest of creation with him chose to disobey the creator this was an act of rebellion. It was willful breaking of the creation covenant.
"The covenant with Abraham, Aaron (Levi) and David are covenants of promise. God promises to do something for Abraham, Aaron or David and their descendants. But when we consider what happened to some of their descendants we find that God rejected them and God stated that they had broken his covenant. Implicit in every covenant is the obligation of obedience. Along with promise-covenants is the understanding that those to whom the promises come must obey the Lord. Failure to obey marks the one under promise-covenant oath a rebel." John M. Zinkand, Covenants: God's Claims (Sioux Center, IA: Dordt University Press, 1984), pp. 54-55.