Why is it important for Christians to believe in the authority of Jesus' word?

The authority of Jesus' word is paramount as it is through His words that life and healing are delivered. As demonstrated in John 4:50, the nobleman believed Jesus' declaration, 'Thy son liveth,' without needing visible signs. This story illustrates that genuine faith rests on the authority of Christ rather than miraculous signs. Christians are called to trust in the sufficiency of God’s promises as recorded in Scripture, understanding that faith comes through hearing His word. The belief in Jesus’ authority is central to a transformative relationship and conviction that He alone brings new life and hope.