People love bridges. Travelers come from the world over to see the Golden Gate Bridge or the Brooklyn Bridge. The most fundamental aspect of a bridge is that it connects two points that are separated by a gulf or gap of some kind. Jesus Christ is the bridge between a holy God and sinful man. How is possible for him to function in this way? It is because he is the only being in existence who is both fully God and fully man at the same time.
Romans 1:3 Concerning his Son, who was descended from David according to the flesh 4 and was declared to be the Son of God in power according to the Spirit of holiness by his resurrection from the dead, Jesus Christ our Lord. (ESV)