Paul presents Abraham as the model of unwavering faith—trusting God’s promise despite impossible circumstances—and shows that righteousness is credited through faith, not human effort. Because believers are justified through faith in the death and resurrection of Jesus Christ, they now possess peace with God, access to grace, and confident hope in future glory. Justification is a completed act of God that transforms a believer’s past, present, and future, producing assurance, endurance, and joy even in suffering.