How do we know that God's mercy is true?

The belief in God's mercy is grounded in Scripture's affirmation that He will have mercy on whom He will have mercy (Romans 9:15). This doctrine emphasizes God's sovereign choice in extending grace, as seen throughout biblical narratives where sinners are spared and transformed. Newton reflects on his own experience of opposition towards God, highlighting the unmerited mercy he received. Thus, the truth of God's mercy is verified through personal testimonies and the consistent message of grace found in the Bible, showcasing that we are called out of darkness into His marvelous light (1 Peter 2:9).