The Law A Schoolmaster

Gal 3:23 But before faith came, we were kept under the law, shut up unto the faith which should afterwards be revealed.
Gal 3:24 Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith.
Gal 3:25 But after that faith is come, we are no longer under a schoolmaster.
Gal 3:26 For ye are all the children of God by faith in Christ Jesus.