What does it mean to be 'caught up' in the air?

To be 'caught up' in 1 Thessalonians 4:17 means that believers, whether living or resurrected, will meet the Lord in a triumphant and public event. This meeting signifies not only the victory over earthly trials but also the definitive victory over sin and death, as it occurs in the realm symbolically associated with Satan's power. This glorious moment brings believers hope and reassurance that they will no longer be separated from the Lord, having been redeemed and transformed. It epitomizes the complete fulfillment of God's promise to His elect.