Stam:
5. SHOULD WE SPEAK OF A COVENANT OF WORKS?
Most Reformed explainers agree that God established the covenant already in paradise, before man’s fall into sin. Many of them make a distinction between the covenant before and after the fall, however. Often this is formulated as follows: before the fall, the covenant was a covenant of works, but after the fall it became a covenant of grace. This implies that before the fall man had to earn something, or at least show himself worthy of obtaining more than he had. But now, after the fall, since he lost the ability to earn anything, man can only live by grace.
Underlying all this is an important question. Has our relationship with God ever been built on human works, achievement, or merit? Did our works in the past and do they in the present in any way determine the relationship itself? Our works–or the lack of them–indeed influence the relationship with God and the way it functions at a given moment, but is it ever based on our works or always solely on his grace towards us?
Covenant of works
The expression covenant of works is not found in Scripture. If the Bible draws any distinction between works and grace, it is that we cannot be saved by our works, the works of the law, but only by faith, through grace. This line of thinking is followed by the apostle Paul over against the Judaizers, for example in Romans 3 and Ephesians 2. It is all a matter of grace, so that no man will boast before the LORD (Rom 3:27; 1 Cor 1:31).
It would appear that the term covenant of works was not used until after the Reformation. Some of the underlying elements (such as the probationary command and the idea of freedom of choice) are mentioned by the early church fathers and the Reformers. Augustine called the relationship which Adam had with God a covenant (pactum). Calvin stressed, like Augustine, that salvation is a work of God alone, through grace, and that this was so also under the old covenant: ". . . the covenant by which they [the Israelites] were reconciled to the Lord was founded on no merits of their own, but solely on the mercy of God who called them" (Institutes, I, 370).
In the time after the Reformation the doctrine concerning the covenant was further developed by men such as Bullinger and Olevianus. The idea of a covenant of works now also made its entry. (L. Berkhof gives a review of this development in his Systematic Theology, pp. 211ff.)