'Under the Law' in the Bible

For all who have sinned without the Law will also perish without [regard to] the Law, and all who have sinned under the Law will be judged and condemned by the Law.

Now we know that whatever the Law [of Moses] says, it speaks to those who are under the Law, so that [the excuses of] every mouth may be silenced [from protesting] and that all the world may be held accountable to God [and subject to His judgment].