In the allegory of Narnia, the White Witch cast a spell over the world, causing perpetual winter without any Christmas. The people of Narnia waited through 100 years of oppression, for Aslan (Jesus) to return and break the spell. They recited this saying to encourage each other:
Wrong will be right, when Aslan comes in sight,
At the sound of his roar, sorrows will be no more,
When he bares his teeth, winter meets its death,
And when he shakes his mane, we shall have spring again.
– C.S. Lewis, The Lion, the Witch, and the Wardrobe
I have lived through a few times in life that felt like the Long Winter of Narnia. The deliverance I needed was as far beyond my power as the change of the seasons. When all looked bleak, the Lord reminded me with words like these, that there is no night without a dawn, and no winter without a spring. All of my troubles will melt away at the roar of the Lion of Judah, whether in this life or in the one to come. (Micah 7; Ecclesiastes 3:1-8; 1 Thessalonians 4:13-18).
Notice that in this saying, although the people of Narnia were longing for spring, they were waiting upon Aslan, and all their hopes were in Him.
If you are living through a Long Winter of your own, know that its days are numbered, and wait upon the One who can end it (Psalm 130:7).