What does the Bible say about joy in sorrow?

In John 16, Jesus speaks to His disciples about the sorrows they will experience due to His impending crucifixion, stating that they will weep and lament while the world rejoices. However, He promises that their sorrow will be turned into joy. This profound truth highlights the Christian belief that even in our deepest sorrow, there is the hope of joy that comes from Christ's resurrection and our union with Him. This joy is not superficial happiness; rather, it is a deep-seated joy that is rooted in the reality of being part of God's family and the assurance of eternal life with Him. As believers, we understand that our present struggles are temporary, and they serve a purpose in shaping our faith and drawing us closer to God.