'Under the Law' in the Bible

For as many as have sinned without the law, shall also perish without the law: and as many as have sinned under the law, shall be condemned by the law,

Now we know that whatever the law says, it says to those who are under the law: that every one may be silenc'd, and all the world plead guilty before God.

What then? shall we sin, because we are not under the law, but under the gospel?