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The Bible asserts that God does not change his mind:
“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?” (Numbers 23:19).
“I the LORD do not change” (Malachi 3:6).
“Every good and perfect gift is from above, coming down from the Father… who does not change like shifting shadows” (James 1:17).
“My covenant will I not break, nor alter the thing that is gone out of my lips” (Psalm 89:34).
God’s holiness is everlastingly constant and unalterable (Num. 23:19; James 1:17). It is precisely because God does not change that His eternal purpose toward His people will stand. He may punish, discipline, and correct them, but all this is for the purpose of bringing repentance and salvation to them.
With God there is no change of mood or purpose. He is ever the immutable God, forever anxious to save lost men in a lost world, through every possible means. This is in contrast with the fickleness and alternating moods attributed to heathen gods.
The Cross is the ultimate proof that God’s Word does not change. If God can change His own word, then He would have canceled the penalty of death that He gave to Adam when he sinned (Genesis 2:17; Romans 5:12). But because God’s judgment could not be canceled, Jesus had to die to save humanity. There was no other way to save humanity and deliver them from the death sentence but by the shedding of Jesus’ blood (John 3:16). So, if God was willing to subject His innocent Son to death in order to keep His Words, he will not change his judgements on the evil doers who insist on their ways (Luke 23:31).
Some claim that Jesus in the New Testament changed the Law He gave in the Old Testament. But Jesus answers, “Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil. For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled” (Matthew 5:17,18).
The assertion that by fulfilling the moral law Christ abrogated that law is not in harmony with His own words. Such an interpretation denies the meaning Christ obviously intended to convey. By fulfilling the law Christ simply “filled” it “full” of meaning—by giving men an example of perfect obedience to the will of God, in order that the same law “might be fulfilled in us” (Rom. 8:3, 4).
In His service,