What does it mean that God has spoken through His Son?

Hebrews 1:1-2 states that while God spoke in various ways through the prophets in the past, He has now fully revealed Himself through His Son, Jesus Christ. This marks a climactic moment in redemptive history, affirming that Jesus is the ultimate embodiment of God's message and purpose. The implication is not only about the content of God's communication but also about the significance of Christ as the mediator of our salvation. His life, death, and resurrection encapsulate God's definitive answer to humanity's plight, making any neglect of this revelation a profoundly serious matter for believers. Thus, engaging with the words of Christ is paramount in the life of faith.