25. She is like Mount Sinai in Arabia and is a picture of the earthly Jewish city of Jerusalem. This city is a slave, and all its people are slaves to the law.
26. But the heavenly Jerusalem which is above is like the free woman. She is our mother.
27. It is written in the Scriptures:“Be happy, Jerusalem.You are like a woman who never gave birth to children.Start singing and shout for joy.You never felt the pain of giving birth to children.But you will have more childrenthan the woman who has a husband.” Isaiah 54:1
28. My brothers, you are God’s children because of his promise, as Isaac was then.
29. The son who was born in the normal way treated the other son badly. It is the same today.
30. But what does the Scripture say? “Throw out the slave woman and her son! The son of the free woman will receive everything his father has. But the son of the slave woman will receive nothing.”