What does the Bible say about the return of Christ?

According to 1 Thessalonians 4:16-17, the return of Christ is characterized by His visible descent from Heaven accompanied by a shout and the sound of the archangel's voice. The dead in Christ will rise first, followed by those who are alive and remain, who shall be caught up together in the clouds to meet the Lord in the air. This signifies a glorious reunion of all God's people, where they will be with the Lord forever—a promise meant to bring comfort and hope to believers throughout all ages.