Sermon Text: Galatians 4:8-11Sermon Title: "Jealously Guard Your Freedom in Christ."Old Testament Reading: Isaiah 46:1-13Lesson: God delivers you from ignorance and idolatry to the saving knowledge of Christ and true freedom, which you must guard. Sermon Outline:I. Your initial life of ignorance, idolatry, and bondage (v. 8).II. The divine change of illumination and freedom (v. 9a).III. The foolishness of leaving freedom for bondage (v. 9b-10).IV. The concern of futility (v. 11).