The promises were spoken to Abraham and to his descendant. Scripture doesn’t say, “descendants,” referring to many, but “your descendant,” referring to one. That descendant is Christ.
Then the Lord appeared to Abram and said, “I’m going to give this land to your descendants.” So he built an altar there to the Lord, who had appeared to him.
He took Abram outside and said, “Now look up at the sky and count the stars, if you are able to count them.” He also said to him, “That’s how many descendants you will have!”
But God said to Abraham, “Don’t be upset about the boy and your slave. Listen to what Sarah says because through Isaac your descendants will carry on your name.
You are the descendants of the prophets and the heirs of the promise that God made to our ancestors when he said to Abraham, ‘Through your descendant all people on earth will be blessed.’
So it was not by obeying the laws in Moses’ Teachings that Abraham or his descendants received the promise that he would inherit the world. Rather, he received this promise through God’s approval that comes by faith.
Therefore, the promise is based on faith so that it can be a gift. Consequently, the promise is guaranteed for every descendant, not only for those who are descendants by obeying Moses’ Teachings but also for those who are descendants by believing as Abraham did. He is the father of all of us,
What, then, is the purpose of the laws given to Moses? They were added to identify what wrongdoing is. Moses’ laws did this until the descendant to whom the promise was given came. It was put into effect through angels, using a mediator.
Scripture saw ahead of time that God would give his approval to non-Jewish people who have faith. So Scripture announced the Good News to Abraham ahead of time when it said, “Through you all the people of the world will be blessed.”
He doesn’t hold on to ⌞Christ,⌟ the head. Christ makes the whole body grow as God wants it to, through support and unity given by the joints and ligaments.
Where this happens, there is no Greek or Jew, circumcised or uncircumcised, barbarian, uncivilized person, slave, or free person. Instead, Christ is everything and in everything.