Luther on the Law

What then? shall we sin, because we are not under the law, but under grace? God forbid. Romans 6:15

"He who pulls down the law, pulls down at the same time the whole
frame-work of human polity and society. 

If the law be thrust out of the church, there will no longer be anything recognized as a sin in the world, since the gospel defines and punishes sin only by recurring to the law.

I never rejected the law." 

Luther