“In him was life, and that life was the light of men. The light shines in the darkness, but the darkness has not understood it.” John 1:4-5
The days become darker as we approach Dec 25, serving as a reminder of how bleak the unregenerate (our condition without Christ) soul is. Those who reject Him, the light of life, remain in this darkness outside of His light and His life. Those who receive Christ, are given the gift of eternal life and their darkness is cast away by His shining light.