Having affirmed his authority to communicate God’s truth, Paul briefly summarizes the good news of Christianity: peace with God, rescue from the present evil age, a future in the new creation—all because Jesus died.
The gospel is fundamentally a message about what Christ has done for us. It is not about us keeping the Mosaic law with all its customs and traditions. We do not earn our way to heaven. We have no starring role in our salvation. It is grace alone, grace from God our Father—a love that we do not deserve
3 Grace to you and peace from God our Father and the Lord Jesus Christ,