Just as Abraham ‘believed God, and it was reckoned to him as righteousness,’ so, you see, those who believe are the descendants of Abraham. And the scripture, foreseeing that God would justify the Gentiles by faith, declared the gospel beforehand to Abraham, saying, ‘All the Gentiles shall be blessed in you.’ For this reason, those who believe are blessed with Abraham who believed. (Galatians 3:6-9 NRSV)
In Paul’s argument for righteousness by faith not by works this passage is central! We are justified by faith alone because it has in fact always been that way!
Abraham was righteous because he believed God and put his trust in him, and all who believe are his descendants, whether they are Jew or Gentile. In fact God declared the Gospel even to Abraham when he declared, ‘All Gentiles shall be blessed in you.’ Which they are through Jesus death on the cross, and his resurrection and ascension into heaven.
God made promises to Abraham which he believed, these promises actually had a far greater scope than Abraham could have imagined yet we only receive those promises the same way as he did, by belief and by faith, not by works.
This is another reason why Paul looks to Abraham as the father of faith rather than Moses or anyone else. Moses lived by faith, yet he will always be associated with the law, not with grace. Abraham, on the other hand, predated the law, and the covenants that God made with him were not conditional of works being fulfilled. Abraham’s part was to believe, God’s part was to fulfil what he had promised.
If we are true descendants of Abraham then any works we do will not be to try to make ourselves right with God, but as a result of our belief in God. We will want to do what God wants as a demonstration of our faith in him. After all true obedience to God is an act of faith. It is an outward expression of the faith we have.
Let’s walk in Abraham’s blessing, and as we are blessed through him, so let us be a blessing to others!