This sermon focuses on the Lord's Prayer, specifically "Thy kingdom come" and "Thy will be done." It emphasizes that God's kingdom is his active reign, not a static place, and comes through his word, sacraments, and the Holy Spirit. True prayer aligns our will with God's, not our desires, as demonstrated by Jesus in Gethsemane. The gospel, where God's justice and mercy meet on the cross, is central. Jesus' sacrifice pays for our sins, enabling us to pray for God's will to be done on earth as in heaven, anticipating its full realization.