What does it mean that Jesus is the express image of God?

In Hebrews 1:3, it states that Jesus is 'the brightness of His glory and the express image of His person.' This means that Jesus is the exact representation of God's nature. The phrase 'express image' reflects not only that Jesus shares the same essence as God but also that He is the full and final revelation of God to humanity. As believers, understanding this truth shapes our worship and relationship with Christ, knowing that to see Jesus is to see God (John 14:9). This understanding is foundational in sovereign grace theology, as it centers our faith around the person and work of Christ, emphasizing that true knowledge of God can only come through Him.