Why is the concept of Christ's second coming important for Christians?

The second coming of Christ is a cornerstone of Christian hope and doctrine. According to Matthew 24:30-31, Jesus will return in glory, gathering His elect to Himself. This truth provides believers with assurance and comfort in the face of life's tribulations. Peter writes in 2 Peter 3:13 that we, according to His promise, look for new heavens and a new earth, wherein dwelleth righteousness. The promise of Christ's return encapsulates the fulfillment of God's redemptive plan, encouraging believers to endure through trials and to remain steadfast in faith, knowing that their ultimate salvation is secure in Him.