What does the Bible say about God's unchangeability?

Scripture emphasizes the unchangeability of God as a source of comfort and assurance for believers. In Malachi 3:6, God declares, 'For I am the LORD, I change not,' illustrating His steadfastness and reliability. This truth is echoed in Hebrews 13:8, where it affirms that 'Jesus Christ is the same yesterday, and today, and forever.' These verses remind us that unlike the ever-changing world, God maintains His promises and purpose, providing a stable foundation for our faith and hope in Him.