In this sermon from the series Doctrines of Grace, the pastor turns to the final point of TULIP: the Preservation of the Saints. Preaching from John 10:22-30, he shows that the believer's security does not rest in human strength, emotional confidence, or personal resolve, but in the Triune God who saves and keeps His people. Jesus declares, "My sheep hear my voice, and I know them, and they follow me." These words reveal the Spirit's abiding testimony, the Son's intimate knowledge, and the Father's unchangeable purpose. Christ gives His sheep eternal life, promises they will never perish, and assures them that no one can snatch them from His hand. This doctrine is not a license for careless living, but a foundation for humble, courageous faith. It comforts weak believers, mortifies pride, steadies wavering feelings, and magnifies the glory of Christ. If salvation depended finally on us, we would surely fall. But because it depends on God, His people are secure. The grace that saves is the grace that keeps. God cannot fail, and therefore those who truly belong to Christ will be preserved to the end forever.