How do we know that Christ will reign ultimately as King?

The assurance of Christ's ultimate reign as King is rooted in the promises found within Scripture, particularly in prophetic texts like Daniel 7. In this chapter, Daniel witnesses a vision of the 'Ancient of Days,' representing God's eternal authority, and sees that dominion, glory, and a kingdom are given to the 'Son of Man'—a title for Christ. This demonstrates that despite the turmoil of earthly powers, God's plan will triumph in the end. Our faith in this promise is vital, as it encourages believers to endure amidst current tribulations, knowing that God is in control and will ultimately establish His kingdom where righteousness prevails.