Last week, we started a conversation on the question: Does God change His mind? We saw we must make a distinction between conditional declarations of God and unconditional determinations of God.
God tells us of the cautionary nature of some of His declarations and the fact that He will act in accordance with our choices. For example, Jer. 18:7–11 says: “If at any time I announce that a nation or kingdom is to be uprooted, torn down and destroyed, and if that nation I warned repents of its evil, then I will relent and not inflict on it the disaster I had planned. And if at another time I announce that a nation or kingdom is to be built up and planted, and if it does evil in my sight and does not obey me, then I will reconsider the good I had intended to do for it. Therefore say to the people of Judah and those living in Jerusalem, ‘This is what the Lord says: Look! I am preparing a disaster for you and devising a plan against you. So, turn from your evil ways, each one of you, and reform your ways and your actions.”
Note the conditional word if: “If that nation I warned repents [like Assyria in Jonah 3] . . . then I will relent.” Conversely, God may tell a nation they will be blessed, but “if it does evil in my sight [like Israel in Micah 1] . . . then I will reconsider the good I had intended to do.”
The bottom line is that God is entirely consistent. In His holiness, God was going to judge Nineveh. However, Nineveh repented and changed its ways. As a result, God, in His holiness, had mercy on Nineveh and spared them. This “change of mind” is entirely consistent with His character. His holiness did not waiver one iota.
The fact God changes His treatment of us in response to our choices has nothing to do with His character. In fact, because God does not change, He must treat the righteous differently from the unrighteous. If someone repents, God consistently forgives; if someone refuses to repent, God consistently judges. He is unchanging in His nature, His plan, and His being. He cannot one day be pleased with the contrite and the next day be angry with the contrite. That would show Him to be mutable and untrustworthy.
For God to tell Nineveh, “I’m going to judge you;” then (after they repent) refuse to judge them may look like God changed His mind. In reality, God was staying true to His character. He loves mercy and forgives the penitent. “Has God forgotten to be merciful?” (Ps. 77:9). The answer? No.
At one time we were all enemies of God due to our sin (Rom. 8:7). God warned us of the wages of sin (Rom. 6:23) in order to cause us to repent. When we repented and trusted Christ for salvation, God “changed His mind” about us, and now we are no longer enemies but His beloved children (John 1:12).
As it would be contrary to God’s character to not punish us had we continued in sin, so it would be contrary to His character to punish us after we repent. Does our change of heart mean that God changes? No, if anything, our salvation points to the fact that God does not change, because had He not saved us for the sake of Christ, He would have acted contrary to His character. (resources quoted included from www.gotquestions.org)