When we are suffering, only Christ’s perspective can replace our resentment with rejoicing. Our whole perspective changes when we catch a glimpse of the purpose of Christ in it all.
From Matthew 11:28-30: “Come to me, all you that are weary and are carrying heavy burdens, and I will give you rest. Take my yoke upon you, and learn from me; for I am gentle and humble in heart, and you will find rest for your souls. For my yoke is easy, and my burden is light.”