Galatians 4:3-5

4:3 So also we, when we were minors, were enslaved under the basic forces of the world. 4:4 But when the appropriate time had come, God sent out his Son, born of a woman, born under the law, 4:5 to redeem those who were under the law, so that we may be adopted as sons with full rights.

Galatians 4:9

4:9 But now that you have come to know God (or rather to be known by God), how can you turn back again to the weak and worthless basic forces? Do you want to be enslaved to them all over again?

Galatians 4:24

4:24 These things may be treated as an allegory, for these women represent two covenants. One is from Mount Sinai bearing children for slavery; this is Hagar.