To the churches in Galatia, from Paul, an Apostle whose commission is not from men and is given, not by man, but by Jesus Christ and God the Father who raised him from the dead;

And this he did that the blessing given to Abraham might be extended to the Gentiles through their union with Jesus Christ; that so, through our faith, we also might receive the promised gift of the Spirit.

Does that set the Law in opposition to God's promises? Heaven forbid! For, if a Law had been given capable of bestowing Life, then righteousness would have actually owed its existence to Law.

But the words of Scripture represent the whole world as being in bondage to sin, so that the promised blessing, dependent, as it is, upon faith in Jesus Christ, may be given to those who have faith in him.

What has become then, of your blessings? For I can bear witness that, had it been possible, you would have torn out your eyes and given them to me!

This story may be taken as an allegory. The women stand for two Covenants. One Covenant, given from Mount Sinai, produces a race of slaves and is represented by Hagar