In this sermon Matthew Bostrom, Director of Next Gen Ministries, teaches on Galatians 3:15-29 emphasizing salvation through faith, not by works of the law. Paul argues that Gentiles received the Holy Spirit through faith in Jesus, not by following the Jewish law. The covenant with Abraham, fulfilled in Jesus, predates the law, showing salvation is through faith. Paul explains the law's purpose as revealing sinfulness and pointing to the need for a savior, leading to freedom through Christ.