The central message of this sermon is that the Tabernacle and Temple in the Old Testament are not just physical structures, but rather a representation of God's spiritual reality, where He dwells among His people. The tabernacle and temple serve as "copies" or "shadows" of this eternal spiritual reality, allowing us to understand and experience God's presence in our lives. This message advances the idea that salvation is not just about forgiveness of sins, but also about reconciliation with a holy God who desires to dwell among His people. The takeaway the teacher wants the listener to understand is that even in the midst of human sinfulness, God has made provision for us to come near Him through sacrifice and cleansing, and ultimately, to experience His presence and glory.