What does Malachi 3:6 mean about God's unchanging nature?

In Malachi 3:6, the phrase 'I am the Lord, I change not' underlines God's eternal nature and unchanging character. This immutability assures us that His promises and covenant with His people remain steadfast. The passage further explains that 'therefore ye sons of Jacob are not consumed,' indicating that it is God's unwavering love and grace that keep His chosen people safe from destruction despite their failings. This reflects the biblical teaching that God is sovereign and that His counsel and decrees are perfect and immutable, providing assurance and comfort to believers amidst life's trials.