The sermon centers on the profound spiritual longing expressed in the second petition of the Lord's Prayer—'Your kingdom come'—emphasizing that this is not a plea for God to become king, but a heartfelt desire for His reign to be increasingly realized in the lives of believers, the church, and all creation. Drawing from Psalm 12, Acts 17, and the Heidelberg Catechism, it underscores that this petition involves a personal surrender to God's rule through His Word and Spirit, a sustained plea for the preservation and growth of the church amid relentless opposition from the forces of darkness, and a confident hope in the ultimate destruction of death through Christ's final return. The preacher calls the congregation to live in the 'already not yet' tension of salvation—acknowledging Christ's present sovereignty while earnestly praying for the full manifestation of His kingdom, where God will be 'all in all' and every tear, sorrow, and suffering will be wiped away, grounded in the certainty of Scripture and the hope of resurrection.