The central message of this sermon is that God's sovereign work depends on perfect timing, and Jesus' triumphal entry into Jerusalem was a purposeful play that deviated from the Roman tradition of triumphs to emphasize his humility and divinity. The sermon highlights how Jesus' actions and words were guided by God's timing, as seen in various events throughout John 12, such as his refusal to publicly announce his Messiahship earlier due to fear of being taken and made king by force. The sermon also explores the concept of "seventy-sevens" in Daniel 9:24-27, which refers to a period of 490 years during which God's plan for salvation would be fulfilled, leading to the establishment of everlasting righteousness. This message advances the belief that God is sovereign over all things, including human events and timelines, and that Jesus' life and ministry were part of a larger, eternal plan. The takeaway the teacher wants listeners to understand is that God's timing is essential for understanding His plan and purpose in history, and that our responses to this timing are crucial in determining our relationship with Him.