How do we know Christ is the only worthy one?

Revelation 5 describes Christ as the Lamb who was slain, declaring Him worthy to take the book and open its seals. His worthiness rests on His unique role in accomplishing God's redemptive plan. He is the only one whose obedience produces righteousness for His people and who willingly became the sacrifice for sin. All of heaven praises Him, underscoring that our hope of salvation and our ability to worship stem from His worthiness as the Redeemer. This assurance is affirmed in the eternal song being sung in heaven.