In Ephesians 1:13–14, Paul turns our attention to the work of the Holy Spirit, showing how believers are both secured and assured in Christ. Having heard and believed the gospel, God’s people are sealed with the Spirit of promise — a sign of God’s faithfulness and the certainty of what He has begun.
This message unfolds through three clear movements: how the Spirit secures us in Christ, how the Spirit assures us of our future inheritance, and how all of this ultimately serves the praise of God’s glory. Along the way, Paul addresses the very real struggles many believers face with doubt and assurance, pointing us away from ourselves and back to the unchanging promises of God.
These verses remind us that the Holy Spirit is not only the giver of blessings, but a gift Himself — God’s pledge that redemption will be completed and that all who belong to Christ will be kept to the end. Far from producing complacency, this assurance fuels perseverance, hope, and lives lived for God’s glory.