Paul is against the Jewish-Christian missionaries who pervert the Gospel. He brings an emotional appeal with spiritual underpinnings to convince his parishioners to fully embrace the freedom that is found in Christ Jesus who has given us Holy Spirit. Paul now shows us that God’s law-free intention to bring the Gentiles into the Kingdom of God is found in the Torah.
Abraham has two sons, one born of a slave woman Hagar (son, Ishmael) and the other born of a free woman Sarah (son, Isaac). The Promise of the Messiah Savior comes through the free woman Sarah, Abraham is her husband, and He is the One who has been Promised for salvation by God. Through Christ Jesus will come the New Jerusalem.
Israel’s law, the Torah, is not just anybody’s law– it is the law of those who have been adopted into God’s Kingdom and are receivers of the Promise found in the Messiah Christ Jesus. Paul directly opposes the missionaries’ interpretation of Torah. In a right reading of Scripture, Scripture illuminates the witness of the law-free Gospel for both Gentiles and Jewish-Christians.
Paul asks his listeners, and us, to hear and understand that there was a gracious Promise from God to us which frees us from the law, which we cannot do perfectly/we are not righteous/we fall short of perfectly achieving all laws. Salvation through Christ’s Jesus’ death on the Cross and Resurrection cleanses us from sin, our unrighteousness, and our spiritual failures.
Jesus gives us salvation so that we become like-Christ by the Power of the Holy Spirit– Holy Spirit perfect in Love, Truth, Mercy, and Justice. Then Paul instructs the Christians to cast out those who pervert the Gospel– the law as a package, he instructs. For, the missionaries had come to them teaching that circumcision and food laws must be obeyed– they picked out a few laws and said the Christians must obey. Paul directs us to stand firm that the law is replaced now by Holy Spirit guidance; freedom given to us by Christ Jesus.