We can relate nighttime and darkness to fear and evil. But it is the darkness itself that leads us to seek that which is beyond the darkness. The darkness leads us to hope. Even in the worst situations in the world, where people are dying on the streets, in situations where people behave abominably toward other people, there is hope. This hope does not come from the hatred, certainly it is not from death.
Hope comes from that which is beyond hatred and death.
Hope comes for the spiritual. Christmas is a time of hope. Christmas is the celebration of the merger of the infinite with the finite, the eternal with the temporal. The birth of the divine and human, infinite and finite. Christmas is a celebration of hope.