https://www.mljtrust.org/sermons-online/ephesians-5-3-5/distinct-roles-of-church-and-state/

The great message of Christianity is that Christians are not only saved from their sin and made right before a holy God, but they are made new creatures as the first fruits of the new creation in Christ. In this sermon on Ephesians 5:3–5 titled “Distinct Roles of Church and State,” Dr. Martyn Lloyd-Jones demonstrates how Scripture undercuts all doctrines of antinomianism, because by the power of the Holy Spirit all who are true believers are renewed and transformed daily through God’s grace. For it is the gospel that truly transforms fallen men and women; it alone can overcome the depravity of fallen human nature and make them new in Christ. This is why all attempts to make people moral without the gospel fail to address the deepest need of humanity. When the church becomes more concerned with moralism than the gospel, it loses the focus of its mission. This has often happened throughout the history of the church, and today many are repeating this error. The remedy to this is to see the distinction between the church and the state. It is the church that has been given the gospel and it is the state that is to rule and bring justice. As Dr. Lloyd-Jones powerfully proclaims, the church must never stray away from its main goal in proclaiming the gospel of God’s grace.