How do we know Christ's return is certain?

The certainty of Christ's return is rooted in the authoritative Word of God, which proclaims that He will come again. Matthew 24:44 instructs believers to be watchful as the Son of Man will return at an hour they do not expect. Furthermore, 1 Thessalonians 4:16-18 assures believers that the Lord will descend from heaven with a shout and raise the dead in Christ, bringing them together with the living in His presence. This incontrovertible promise underlines the importance of readiness and hope among Christians, affirming that Christ's advent is a key element of our faith.