What does 'the Lord reigneth' mean for Christians?

For Christians, 'the Lord reigneth' serves as a proclamation that reinforces our understanding of God's absolute authority and governance over the universe. This phrase, echoed in multiple scriptures such as Psalm 97:1, is a direct invitation for believers to respond with joy and praise. It underscores the truth that God is not inactive or detached from His creation; rather, He eminently governs every aspect of life and history. This understanding helps Christians live confidently, knowing that their lives are under His care and that He is actively involved in bringing about His purposes.