How do we know God as a just God and a Savior is true?

The concept of God as a just God and Savior is rooted in Scripture, particularly in Isaiah 45 where God declares, 'I am a just God, and a Savior.' We see this truth ultimately realized in Jesus Christ at the cross, where He bore the sins of His people. Paul emphasizes this duality in Romans 3:26, showing that God is just in punishing sin and the justifier of those who have faith in Christ. Therefore, through the fulfillment of these prophecies and teachings, we can confidently acknowledge God as both just and a Savior.