In the Book of Romans, Paul writes a letter to the Roman Church. It details the Gospel and describes how sinful humanity can be justified.
All humanity was trapped in sin. Obeying the law of Torah could not rescue them, but Jesus' death and resurrection created a multiethnic covenant family.
Justification by Faith
Every human since Adam chose sin and selfishness, but Jesus offered His life so everyone can be justified by faith and enter the new Jesus-like humanity.
God's Promise Fulfilled
Israelites in the past and present rejected God, but He uses that rejection to graft Gentiles into His covenant family and grow His multiethnic Church.
The new humanity of multiethnic Jews and gentiles who follow Jesus is unified as they love and forgive each other and learn to respect differences.
The people of Israel tried to obey God and follow the Law, but they didn't succeed. Only faith in Jesus' death and resurrection can justify humanity and fulfill God's promise to create a covenant relationship with His people, the descendants of Abraham.
Through Jesus, God creates a new covenant family that includes Jews and gentiles who are unified as they love and forgive each other. Even though people continue to reject Jesus, God uses their rejection to expand His family and grow the Church.