Galatians 3

Through out much of Paul's writings, he refers to the "law" or "works" related to the law.  It becomes evident that the law and works of the law that he is referring to is the Mosaic law and should not be confused with the laws and commandments given by the Savior.  Paul makes that perfectly clear as he refers to Abraham of which all the Jews make claim to being his posterity for Abraham lived long before Moses and the Mosaic law.  Abraham himself had been introduced to the laws, commandments, ordinances and covenants of Jesus Christ for -

"Even as Abraham believed God, and it was accounted to him for righteousness.
7 Know ye therefore that they which are of faith, the same are the children of Abraham.
8 And the scripture, foreseeing that God would justify the heathen through faith, preached before the gospel unto Abraham, saying, In thee shall all nations be blessed.
9 So then they which be of faith are blessed with faithful Abraham."  (New Testament | Galatians 3:6 - 9)

Paul is explaining that eternal life comes by faith in Jesus Christ and following His teachings, ordinances, and covenants, not the law of Moses for -

"...to Abraham and his seed were the promises made. He saith not, And to seeds, as of many; but as of one, And to thy seed, which is Christ.
17 And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect."  (New Testament | Galatians 3:16 - 17)

Thus -

"...the law was our schoolmaster to bring us unto Christ, that we might be justified by faith.
25 But after that faith is come, we are no longer under a schoolmaster.
26 For ye are all the children of God by faith in Christ Jesus.
27 For as many of you as have been baptized into Christ have put on Christ."  (New Testament | Galatians 3:24 - 27)

It becomes perfectly clear that the "law" is in reference to the law of Moses which would lead to faith and to the higher laws and ordianances of Jesus Christ.