Did God know ahead of time that Nineveh would repent, and in turn, he would repent of the destruction he said he would do to them?
Jer 18:7
At what instant I shall speak concerning a nation, and concerning a kingdom, to pluck up, and to pull down, and to destroy it;
Jer 18:8
If that nation, against whom I have pronounced, turn from their evil, I will repent of the evil that I thought to do unto them.
Nineveh met the conditions, and God repented/relented of the judgment they were facing at that time. Jonah seemingly knew that the Ninevites would repent, and that is why he initially fled from God's call.
Jon 3:5
So the people of Nineveh believed God, and proclaimed a fast, and put on sackcloth, from the greatest of them even to the least of them.
Jon 3:6
For word came unto the king of Nineveh, and he arose from his throne, and he laid his robe from him, and covered him with sackcloth, and sat in ashes.
Jon 3:7
And he caused it to be proclaimed and published through Nineveh by the decree of the king and his nobles, saying, Let neither man nor beast, herd nor flock, taste any thing: let them not feed, nor drink water:
Jon 3:8
But let man and beast be covered with sackcloth, and cry mightily unto God: yea, let them turn every one from his evil way, and from the violence that is in their hands.
Jon 3:9
Who can tell if God will turn and repent, and turn away from his fierce anger, that we perish not?
Jon 3:10
And God saw their works, that they turned from their evil way; and God repented of the evil, that he had said that he would do unto them; and he did it not.
Jon 4:1
But it displeased Jonah exceedingly, and he was very angry.
Jon 4:2
And he prayed unto the LORD, and said, I pray thee, O LORD, was not this my saying, when I was yet in my country? Therefore I fled before unto Tarshish: for I knew that thou art a gracious God, and merciful, slow to anger, and of great kindness, and repentest thee of the evil.
This same principle applies to individuals as well. In other words, God commands all men everywhere to repent. Those who repent will find mercy. Those who do not will find judgment.
Do you think that God knows who will ultimately be saved and who will ultimately be lost?
I do.
Did God lie?