The central message of this sermon is that God's timing is perfect, and He acts at exactly the right moment to accomplish His purposes. This theme is illustrated through a study of the biblical narrative, particularly in Genesis 3, where the promise of salvation is first given after humanity's fall into sin. The preacher argues that God's plan of redemption involves a sequence of events that unfold over time, with Jesus' birth being the ultimate fulfillment of this promise. Through an examination of genealogies and the concept of "seed" in Hebrew, the preacher highlights the significance of Mary as the physical mother of Jesus, providing him with humanity and sinlessness, which are essential for his role as Savior. The takeaway from this sermon is that God's sovereignty and wisdom are on full display in His timing and plan for salvation, and that we can trust in His goodness and perfection even when faced with uncertainty or difficulty.