V. In what does the law differ from the gospel?

The exposition of this Question is necessary for a variety of considerations, and especially that we may have a proper understanding of the law and the gospel, to which a knowledge of that in which they differ greatly contributes. According to the definition of the law, which says, that it promises rewards to those who render perfect obedience; and that it promises them freely, inasmuch as no obedience can be meritorious in the sight of God, it would seem that it does not differ from the gospel, which also promises eternal life freely.

Yet notwithstanding this seeming agreement, there is a great difference between the law and the gospel. They differ,

1. As to the mode of revelation peculiar to each. The law is known naturally: the gospel was divinely revealed after the fall of man.

2. In matter or doctrine. The law declares the justice of God separately considered: the gospel declares it in connection with his mercy. The law teaches what we ought to be in order that we may be saved: the gospel teaches in addition to this, how we may become such as the law requires, viz: by faith in Christ.

3. In their conditions or promises. The law promises eternal life and all good things upon the condition of our own and perfect righteousness, and of obedience in us: the gospel promises the same blessings upon the condition that we exercise faith in Christ, by which we embrace the obedience which another, even Christ, has performed in our behalf; or the gospel teaches that we are justified freely by faith in Christ. With this faith is also connected, as by an indissoluble bond, the condition of new obedience.

4. In their effects. The law works wrath, and is the ministration of death: the gospel is the ministration of life and of the Spirit. (Rom. 4:15. 2 Cor. 3:7.)