How do we know that Jesus is the faithful witness?

In Revelation 1:5, Jesus is referred to as the faithful witness who came to reveal God's nature and His plan for humanity. This title reflects His unique role in history, as He is the only one who can truly testify of the Father and what it means to be reconciled with God. Jesus' declaration in John 14:6, 'I am the way, the truth, and the life' underscores his position as the sole mediator between God and man, demonstrating His faithfulness in delivering God's message and ensuring our understanding of salvation.