From the book Things Unseen:

"Few things have the power to fashion in us utter trust in God and deep conformity to the character of Jesus Christ like suffering does. Few things build our faith and refine our faith like it does. What others intend for evil, God uses for good. He takes trials of many kinds and from them makes possible in us the heart of His Son. And to become like Christ is our everlasting destiny. Thus, such trials achieve for us an eternal glory that far outweighs all else."

2 Corinthians 4:17
For our light and momentary troubles are achieving for us an eternal glory that far outweighs them all.

Romans 8:28
And we know that in all things God works for the good of those who love him, who have been called according to his purpose.