The Apostle Paul
Galatians 4:31ESV·traditional attribution

So, brothers, we are not children of the slave but of the free woman.

John Calvin Reformed @genevareformer

31. So then, brethren. He now exhorts the Galatians to prefer the condition of the children of Sarah to that of the children of Hagar; and having reminded them that, by the grace of Christ, they were born to freedom, he desires them to continue in the same condition.

Matthew Henry Presbyterian @wholebiblehenry

In these verses the apostle illustrates the difference between believers who rested in Christ only and those judaizers who trusted in the law, by a comparison taken from the story of Isaac and Ishmael. This he introduces in such a manner as was proper to strike and impress their minds, and to convince them of their great weakness in departing from the truth, and suffering...

Commenting on Galatians 4:21-31

Albert Barnes Presbyterian @notesbybarnes

Verse 31. So then, brethren. It follows from all this. Not from the allegory regarded as an argument--for Paul does not use it thus--but from the considerations suggested on the whole subject. Since the Christian religion is so superior to the Jewish; since we are by it freed from degrading servitude, and are not in bondage to rites and ceremonies; since it was designed to...