The sermon explores the certainty of the Lord's return, emphasizing that while God's patience offers opportunity for repentance, it does not negate the inevitability of judgment. Drawing from 2 Peter 3, the message clarifies that the 'day of the Lord' refers to a climactic period of destruction and exposure, not a single day, and underscores the importance of living in holy conduct and godliness, anticipating a new heavens and a new earth where righteousness dwells. The speaker urges listeners to be mindful of this future reality, recognizing that it should profoundly impact their present decisions, relationships, and use of time and resources, resisting the temptation to disregard the coming judgment and instead embracing a life aligned with God's will.