Immutability means that God does not change in any way. He is unchanging and for that reason perfect in every way. Malachi 3:6 “For I am the LORD, I change not; therefore, ye sons of Jacob are not consumed.” Psalms 102:27 “But thou art the same, and thy years shall have no end.” Hebrews 13:8 “Jesus Christ the same yesterday, and to day, and forever.” By definition, unchanging means “to remain the same”. If God remains the same then we know that His attributes remain the same, His actions remain consistent, and His nature and purpose are in harmony with His immutability. The consistency of an unchanging God provides us with security and a place to anchor our faith. We thus look forward in hope, faith, and trust as He is the ‘Rock’ Who firmly stands with us. He will, under no circumstances, leave us or abandon us.
James 1:17 also teaches the immutability of God: “Every good gift and every perfect gift is from above and comes down from the Father of lights, with whom is no variableness nor shadow of turning.” But with God, who, spiritually speaking, is light itself, there is no darkness at all; there is no change with Him, nor anything like it. God is unchangeable in His nature, perfections, purposes, promises, and gifts. He, being holy, cannot turn to that which is evil; nor can He, who is the fountain of light, be the cause of darkness. Since every good and perfect gift comes from Him, evil cannot proceed from Him, nor can He tempt any. The Bible is clear that God does not change His mind, His will, or His nature in any way whatsoever and under any circumstance.
God is immutable because He causes things and is in full control. If He would change, then what would be the difference between man and God? Further, God exists outside time and space. Thus, the question of changing does not arise. Second, the immutability of God is necessary for His perfection. If anything changes, it must change for the better or the worse, because a change that makes no difference is not a change. But, since God is perfect, He does not need anything. Therefore, He cannot change for the better. If God were to lose something, He would no longer be perfect; therefore, He cannot change for the worse.
Third, the immutability of God is related to His omniscience. When someone changes his/her mind, it is often because new information or circumstances have come to light that was not previously known or because the circumstances have changed and require a different attitude or action. Because God is omniscient, He cannot learn something new that He did not already know. So, when the Bible speaks of God changing His mind, it must be understood that the circumstance or situation has changed, not God.
Numbers 23:19 clearly presents the immutability of God: “God is not a man, that He should lie, nor a son of man, that He should change His mind. Does He speak and then not act? Does He promise and not fulfill?” No, God does not change His mind. These verses affirm the doctrine of God’s immutability: He is unchanging and unchangeable.
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