How do we know Christ is altogether lovely?

The characterization of Christ as 'altogether lovely' encapsulates His perfection in both His divine nature and His human qualities. In Song of Solomon 5:16, we read that He is described as the 'chiefest among 10,000,' highlighting His uniqueness and surpassing beauty. This loveliness is not superficial; it speaks to His complete moral perfection and faithfulness in fulfilling His promises. Moreover, Christ embodies love, as affirmed in 1 John 4:16, establishing Him as the very essence of love—'God is love'—and reinforcing the idea that His loveliness is integral to His being.