The central message of this sermon is that the new covenant, established through Jesus' sacrifice on the cross, is a fundamental aspect of God's plan of salvation. This covenant is internal, meaning it transforms believers from within, whereas the old covenant was external, focusing on obedience to laws and rituals. The key takeaway is that Christ's death and resurrection are not just significant events in history but are, in fact, the fulcrum of the universe, establishing a new relationship between God and humanity based on love, forgiveness, and redemption. This understanding advances the belief that God's plan of salvation is centered on His love for humanity, demonstrated through Jesus' sacrifice, rather than on external rituals or laws. The sermon also subtly challenges replacement theology by emphasizing that the church has not replaced Israel as God's chosen people, but rather exists in a unique position between the old and new covenants.