When the sun shines right in your eyes, your immediate inclination is to squint, turn away, or put sunglasses on. Light can be blinding! Though light penetrates our world, providing illumination and energy for our very existence, big doses of it can be difficult to handle. That's true spiritually as well. Jesus, by His teaching and work, illuminated this world darkened by sin. Some rejoiced in that light, able to see where they were going. But others, who'd been so accustomed to spiritual darkness, could only wince when Jesus was around.