How do we know Christ's resurrection changed everything?

The resurrection of Christ signifies the inauguration of the new covenant, which has profound implications for how believers worship. As the preacher pointed out, after Christ's resurrection, He sent the Holy Spirit at Pentecost, marking a transformative era where believers worship in 'newness of spirit' rather than 'oldness of the letter.' This reflects the reality that all of creation and worship practices are made new through Christ, fulfilling the types and shadows of the Old Covenant. The transition from death to life embodied by Christ illustrates that the resurrection is not just a historical fact but the basis of newness of life for all who believe.