In Galatians 4:21–31, Paul explains that God's people are children of promise, not slaves under the Law; therefore, we must live according to our identity in Christ and reject the slavery of false teaching. I. The Historical Reality of Two Sons (vv. 21–23) A. The son by the servant woman (vv. 22a–b, 23a) B. The son by the free woman (vv. 22c, 23b) II. The Covenant Allegory of Two Women (vv. 24–27) A. The enslaved Jerusalem (vv. 24–25) B. The free Jerusalem (vv. 26–27) III. The Gospel Application for the Galatians (vv. 28–31) A. Your status (v. 28) B. Your struggle (v. 29) C. Your separation (vv. 30–31)