6 “For I am the Lord, I do not change; Therefore you are not consumed, O sons of Jacob. 7 Yet from the days of your fathers You have gone away from My ordinances and have not kept them. Return to Me, and I will return to you,” says the Lord of hosts. “But you said, ‘In what way shall we return?’” (Malachi 3:6–7, NKJV)
The nature of God is marked by immutability. By contrast, Israel had changed time and again, turning away from and disobeying God’s law. Yet still, God called them to return, and if they would do so, He would forgive them. God’s unchanging nature includes His constant willingness to forgive. Our passage shows that God’s unchanging nature also includes the fact that He always keeps His word. He kept His word to not completely consume Israel for her sins (Jer. 30:11). Yet, Israel continued to act as if she had done nothing wrong, turning away from the Lord. God would judge their pride (Mal. 4:1). We must not think that because “God is love” He is not also a God of truth and justice. He calls sinners to repent. He is ready to forgive. And, He will judge those who refuse Him. He does not change.