“Joy in God in the midst of suffering makes the worth of God – the all-satisfying glory of God – shine more brightly than it would through our joy at any other time. Sunshine happiness signals the value of sunshine. But happiness in suffering signals the value of God. Suffering and hardship joyfully accepted in the path of obedience to Christ show the supremacy of Christ more than all our faithfulness in fair day.”John Piper
Feed My Sheep, p. 256.