An omniscient God does not change His mind as humans do for trivial reasons, trying something different, making a mistake, or other such reasons. God may change His response depending upon human choices and actions, but those always remain consistent with His unchanging Character of holiness, righteousness, goodness, love, mercy, and justice.
“The fact that 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,” and then (after they repent) refuse to judge them may
look like God changed His mind. In reality, God was simply staying true to His character. He loves mercy and forgives the penitent. “Has God forgotten to be merciful?” (
Psalm 77:9). The answer is, no.”