The Apostle Paul
Galatians 3:14ESV·traditional attribution

so that in Christ Jesus the blessing of Abraham might come to the Gentiles, so that we might receive the promised Spirit through faith.

John Calvin Reformed @genevareformer

14. That the blessing of Abraham. Having said that “Christ hath redeemed us from the curse of the law” he now applies that statement more closely to his purpose. The promised blessing of Abraham is founded on this, and flows from it to the Gentiles.

Matthew Henry Presbyterian @wholebiblehenry

The apostle having reproved the Galatians for not obeying the truth, and endeavoured to impress them with a sense of their folly herein, in these verses he largely proves the doctrine which he had reproved them for rejecting, namely, that of justification by faith without the works of the law. This he does several ways. I. From the example of Abraham's justification. This argument the apostle uses, Rom. 4.

Commenting on Galatians 3:6-18

John Gill Reformed Baptist @doctorgill

That the blessing of Abraham,.... The same blessing Abraham enjoyed, even justification by the righteousness of Christ; and what was promised to Abraham, that in him, his seed, that is Christ, the Gentiles should be blessed, or justified; for though this blessing may in general comprise every spiritual blessing, yet it chiefly regards that of justification; or a deliverance from the curse of the law...