I apologize for the bluntness of this statement, but it is NOT called the Law BUT Gospel distinction.
It is called Law AND Gospel.
God's Word of Law and Gospel are not to be separated, or even put in opposition to each other. God is not a schizophrenic. The Law is His good Word. The Gospel is His good Word. They have different content and different purposes, but they are both from God and are both good.
The Law is God telling us how to act as human beings. The Gospel is Him actually making us into human beings.
The Law is His will. It only seems like bad news to us because we ignore it. The Gospel does not save us from the Law, but rather from our inability to keep the Law.
So we should not hear sermons or read blog posts or articles that say, basically, that the Gospel frees us from the Law. It does not.
The Gospel sets sinners free from the accusations of the Law. But we are never free from the content of the Law itself. In fact we are born anew through the good news of the Gospel to fulfill the Law, to do good works.
This side of the resurrection the Law never stops talking.
Neither does the Gospel.
As humans, as Christians, we need to hear both, constantly.
There is no "but" between Law and Gospel. In fact, once justified by Christ the Christian delights in the Law of God. He does not abandon it.
No more "buts". Law AND Gospel, always distinguished, always together, until Jesus returns and renders that distinction unnecessary.
Come Lord Jesus!