What does it mean that God does not change?

God's immutability, or unchanging nature, is emphasized in Malachi 3:6, which states, 'For I am the Lord, I change not.' This truth assures us that God’s attributes—His love, mercy, and faithfulness—remain constant throughout time. Unlike humans, who may change in response to circumstances, God stands firm and unchanging in His character. This characteristic provides believers with a solid foundation for their faith because they can trust that God will fulfill His promises and uphold His covenant without variation.