What does Isaiah 4 say about the future of the church?

In Isaiah 4, amidst the looming judgment described throughout the chapters, there is a promise of glory for God’s remnant, indicating that His true church will ultimately be established and protected. Despite the great apostasy in the world, those who align themselves with Christ and hold fast to His truths will be called holy, washed clean of sin, and preserved by God. The imagery of the protective cloud and fire symbolizes God's continuous guidance and safety for His people, illustrating that while many may fall away, the elect will remain steadfast in faith and presence.