How do we know that Christ's reign is eternal?

The eternal nature of Christ's reign is intricately connected to His office as our high priest. Psalm 110:4 states, 'Thou art a priest forever after the order of Melchizedek,' which highlights both His priesthood and its eternal quality. Unlike the Levitical priesthood, which was temporary and tied to lineage, Melchizedek's priesthood signifies an everlasting intercession. This connection to Melchizedek emphasizes that Christ not only advocates for His people eternally but also rules with complete authority. Furthermore, the assurance of Christ's continuous reign stands as a cornerstone for the believer's faith, assuring them of an unshakeable hope as they navigate the trials of life under His sovereign governance.