How do we know the doctrine of Christ as the true watchman is true?

Christ is depicted as the true watchman in Isaiah 62:6, where God sets watchmen upon His walls to proclaim His word and warn of impending danger. Jesus is recognized as the chief watchman who protects His people and provides the gospel as the beacon of hope. His sacrificial work on the cross confirms His authority and care for His flock, fulfilling the requirement for righteousness that the law demands. The consistency of Scripture—from the Old Testament prophecies to their fulfillment in Christ—serves as powerful testimony to the truth of His role as the one who leads us to salvation and guards our lives spiritually. The cry of the true watchman always points to reliance on God's grace through faith in Christ.