Joseph Benson's Commentary of the Old and New Testaments - Galatians 3:1
Galatians 3:1. St Paul having, by many arguments, proved himself to be a real apostle, and showed that his knowledge of the gospel was given him by immediate revelation from the Lord Jesus, proceeds in this and the following chapter to treat of the doctrines in dispute between him and the false teachers, and especially of that of justification, which these Jewish teachers affirmed could not be obtained by the Gentiles unless they were circumcised, and observed the ceremonies of the law of... read more
Albert Barnes' Notes on the Whole Bible - Galatians 3:1
O foolish Galatians - That is, foolish for having yielded to the influence of the false teachers, and for having embraced doctrines that tended to subvert the gospel of the Redeemer. The original word used here (ἀνόητοι anoētoi) denotes void of understanding; and they had shown it in a remarkable manner in rejecting the doctrine of the apostles, and in embracing the errors into which they had fallen. It will be remembered that this is an expression similar to what was applied to them by... read more