'Under Law' in the Bible

But before faith came, we were guarded under law, shut up to faith which was about to be revealed.

but when the fulness of the time was come, God sent forth his Son, come of woman, come under law,

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

Tell me, ye who are desirous of being under law, do ye not listen to the law?

but if ye are led by the Spirit, ye are not under law.