In Galatians 4:21-31, Paul gave an interpretation of the story from the Old Testament about Abraham and the two sons he had, one to Hagar the slave woman, and the other to Sarah his wife. The false teachers in Galatia were perhaps using this story to try to force non-Jewish believers to become Jews. However, Paul showed how the story itself supports his main thesis that both Jews and non-Jews may receive God’s promised blessing through faith, not through law-keeping.
The chief priest could not control his wicked sons, so God removed them all and raised up the one who could intercede between humans...
Jesus announced that the hour had come for him to be glorified, but his glorification would begin with a cross.
Paul’s time in Athens provides an example of how to present Jesus and the resurrection to a cultured non-Christian audience.