The central message of this sermon is that the nation's rejection of Jesus as their Messiah was not a surprise to God, but rather it was an inevitable consequence of their preconceived expectations and unyielding attachment to traditional notions of what the Messiah should be. This unbelief ultimately stemmed from their inability to reconcile the idea of a suffering Savior with their own hopes for a triumphant king. The sermon suggests that this dynamic is not unique to the ancient Israelites, but rather it can be seen in all human beings who cling to their own expectations and refuse to consider alternative perspectives, even when faced with overwhelming evidence to the contrary. Through the lens of Isaiah 6, the sermon highlights God's sovereignty and purpose in using the nation's rejection as a means to fulfill His plan, despite humanity's natural inclination towards hardness of heart and blindness. The takeaway is that our own faith and understanding are not immune to this dynamic, and we must continually acknowledge our limitations and be open to new revelation in order to deepen our relationship with God.