'Under Law' in the Bible

But before faith came we were kept in custody under law, having been confined for faith that was going to be revealed.

But when the fullness of the time came, God sent forth his Son, born from a woman, born under law,

so that he might redeem those under law, so that we might receive the sonship.

Tell me those desiring to be under law, do ye not hear the law?

But if ye are led by Spirit ye are not under law.