How does God assure us of His unchanging nature?

In the Bible, particularly in Malachi 3:6, God declares, 'For I am the Lord, I change not.' This unchanging nature assures believers that God's promises and character remain constant, unaffected by our fluctuating circumstances. Isaiah 41:10 illustrates this by stating, 'Fear not; I am your God,' affirming that despite human frailty and sinfulness, God's commitment to His people endures. This provides profound comfort and security, allowing Christians to stand firm in their faith without fear of abandonment.