Romans 12:1–2 is the pivotal transition from doctrine to duty, being rooted in God's mercies. Here Paul calls believers to offer their lives as living sacrifices in holy worship, emphasizing the ultimate purpose of God's redemptive plan—restoring all things through Christ. The Church, true spiritual Israel, is now the temple of God, replacing the old covenant system. Paul appeals to holiness and obedience, grounded in the irrevocable nature of God's gifts and calling, and the ultimate goal of His sovereign mercy, which extends to all nations.