'Under the Law' in the Bible

Now before faith came we were held in custody under the law, being kept as prisoners until the coming faith would be revealed.

But when the appropriate time had come, God sent out his Son, born of a woman, born under the law,

to redeem those who were under the law, so that we may be adopted as sons with full rights.

Tell me, you who want to be under the law, do you not understand the law?

But if you are led by the Spirit, you are not under the law.