Pastor Mark's sermon centers on Matthew 5:1-2, 7:28-29, and 6:5-15, introducing the new Sermon on the Mount sermon series. The passages mark the start of Jesus' ministry and the unveiling of His Kingdom's principles. The sermon emphasizes that the Sermon on the Mount outlines the blueprint for living as Kingdom Citizens, challenging established norms and presenting an "upside-down kingdom." Pastor Mark underscores submission to Jesus as King, illustrated by the Lord's Prayer as an allegiance oath.