In Romans 8, Paul establishes the absolute security of our salvation by highlighting three key truths: first, God has delivered believers from all condemnation (verses 1-4); second, God has fundamentally changed and empowered us by His Spirit, guaranteeing He will complete the work He began in us (verses 5-13); and third, God has adopted all who believe in Jesus Christ as His own children, making us belong to Him even more securely than our own children belong to us (verses 14-17).