Context / meaning
Galatians 4 [28.] Now we, brothers, as Isaac was, are children of promise. But as then, he who was born according to the flesh persecuted him who was born according to the Spirit, so also it is now. However what does the Scripture say? “Throw out the servant and her son, for the son of the servant will not inherit with the son of the free woman.”[c] So then, brothers, we are not children of a servant, but of the free woman.
Galatians 5 [1.] Stand firm therefore in the liberty by which Christ has made us free, and don’t be entangled again with a yoke of bondage. Behold, I, Paul, tell you that if you receive circumcision, Christ will profit you nothing. Yes, I testify again to every man who receives circumcision, that he is a debtor to do the whole law. You are alienated from Christ, you who desire to be justified by the law. You have fallen away from grace.
Galatians 5 [5.] For we, through the Spirit, by faith wait for the hope of righteousness. For in Christ Jesus neither circumcision amounts to anything, nor uncircumcision, but faith working through love. You were running well! Who interfered with you that you should not obey the truth? This persuasion is not from him who calls you. A little yeast grows through the whole lump. I have confidence toward you in the Lord that you will think no other way. But he who troubles you will bear his judgment, whoever he is.
c. Galatians 4:30 Genesis 21:10.