The sermon centers on the imminent and unexpected return of Christ, emphasizing that believers are to live in constant readiness, not in fear but in faithful stewardship and holy vigilance. Drawing from First Thessalonians 5:2 and Jesus' teaching in Matthew 24, it underscores that while the precise timing of Christ's second coming remains unknown—even to angels—its certainty is grounded in Scripture and the historical fulfillment of prophetic signs, such as the destruction of Jerusalem. The preacher contrasts the world's false sense of security, marked by peace and complacency, with the believer's identity as children of light and day, called to be watchful, sober, and actively responsible in love and labor. The message is both a call to personal holiness and a profound encouragement: Christ's return is not a thief in the night for the faithful, but a glorious hope that will gather His people, raise the dead, and fulfill God's redemptive plan. The exhortation to live in light of this truth is rooted in the unity of Christ's own words and Paul's apostolic teaching, inviting the church to walk in faith, love, and constant expectation.