What does the Bible say about weeping and rejoicing?

Psalm 126 speaks to the dual experience of believers who can both weep in sorrow and rejoice in hope. The verse, 'They that sow in tears shall reap in joy,' illustrates this paradox, indicating that while God's people face trials and sorrow, they also have a foundation for joy in the promises of God. Jesus himself, a man of sorrows, showed how grief and joy can coexist in the life of a believer. Thus, our sorrows are not without purpose; they are part of the journey towards greater joy in Christ, who ultimately brings redemption and comfort.