gOD WILL BE GLORIED BY FULFILLING THE aBRAHAMIC cOVENANT, BY DEMONSTRATING HIS DIVINE NATURE AND ETERNAL POWER THROUGH THE MOSAIC COVENANT with Righteousness and Judgment

The Law of Moses, with it's judgment and curses is holy and true giving glory to God.
The Lord using the Law of Moses and the Mosaic Covenant so that He may be Gloried when He fulfills the Abrahamic Covenant, for He would have demonstrated His eternal power and might and His divine character, so that every knee will bow and tongue confess that Jesus is Lord. 

Moses MADE US SLAVES under the law

The Law of Moses Enslaved us Binding us to Sin
The Law of Moses was brought because of transgressions. It made us aware that our actions transgress a Holy God, therefore it brought judgment because God is just. Man is how bound to sin and death under the curse of the Law, it's judgment. We are now accountable to God for our actions. The Law imprisoned us and brought us death, while it made sin come alive. Why would a Holy God do such a thing?

CHRIST SET US FREE FROM THE SLAVERY OF THE LAW

Believers Have Been Set Free From the Law of Moses in the Apostolic Council of Jerusalem​ around 50 AD on Paul's first Missionary Journey
While returning from Paul's first missionary voyage from Cilicia to Antioch in Galatia, he discovered that false prophets had already lead the people astray from the freedom of the gospel message. They had been burdened with the yoke of having to abide by the laws of Moses. Paul meeting for the first time with the apostles and elders of the church in Jerusalem to resolve the matter in the Apostolic Council of Jerusalem around 50 AD.
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The Law of Moses Bible Verses