CHRIST THE SOURCE OF LIFE GREATER THAN ADAM THE SOURCE OF DEATH
Before there can be fulfilment, another than Moses must come, bringing another doctrine. Instead of a law enjoined, there must be grace and truth revealed. For to enjoin a command and to embody the truth are two different things; just as teaching and doing differ. Moses, it is true, teaches the doctrine of the Law, so far as exposition is concerned, but he can neither fulfil it himself nor give others the ability to do so. That it might be fulfilled, God's Son had to come with his fullness; he has fulfilled the Law for himself and it is he who communicates to our empty heart the power to attain to the same fullness.
This becomes possible when we receive grace for grace, that is, when we come to the enjoyment of Christ, and for the sake of him who enjoys with God fullness of grace, although our own obedience to the Law is still imperfect. Being possessed of solace and grace, we receive by his power the Holy Spirit also, so that, instead of harboring mere empty letters within us, we come to the truth and begin to fulfil God's Law, in such a way, however, that we draw from his fullness and drink from that as a fountain.
32. Paul gives us the same thought in Romans 5:17-18, where he compares Adam and Christ. Adam, he says, by his disobedience in Paradise, became the source of sin and death in the world; by the sin of this one man, condemnation passed upon all men. But on the other hand, Christ, by his obedience and righteousness, has become for us the abundant source wherefrom all may obtain righteousness and the power of obedience. And with respect to the latter source, it is far richer and more abundant than the former. While by the single sin of one man, sin and death passed upon all men, to wax still more powerful with the advent of the Law, of such surpassing strength and greatness, on the other hand, is the grace and bounty which we have in Christ that it not only washes away the particular sin of the one man Adam, which, until Christ came, overwhelmed all men in death, but overwhelms and blots out all sin whatever. Thus they who receive his fullness of grace and bounty unto righteousness are, according to Paul, lords of life through Jesus Christ alone.