Now you say you don't even believe in the Omniscience of God.
God did and does know all.
Psalm 139
1 You have searched me, Lord,
and you know me.
2 You know when I sit and when I rise;
you perceive my thoughts from afar.
3 You discern my going out and my lying down;
you are familiar with all my ways.
4 Before a word is on my tongue
you, Lord, know it completely.
1 John 3:20
20 if our hearts condemn us, we know that God is greater than our hearts, and he knows everything.
Please carefully study Psalm 139:1-4 and 1 John 3:20 in the context in which they appear—and in the context of the rest of Scripture.
Genesis 6:6. And the Lord was sorry that he had made humankind on the earth, and it grieved him to his heart.
Exodus 32:14. And the Lord changed his mind about the disaster that he planned to bring on his people.
Jonah 3:10. When God saw what they did, how they turned from their evil ways, God changed his mind about the calamity that he had said he would bring upon them; and he did not do it.
Jer. 18:7. At one moment I may declare concerning a nation or a kingdom, that I will pluck up and break down and destroy it,
8. but if that nation, concerning which I have spoken, turns from its evil, I will change my mind about the disaster that I intended to bring on it.
9. And at another moment I may declare concerning a nation or a kingdom that I will build and plant it,
10. but if it does evil in my sight, not listening to my voice, then I will change my mind about the good that I had intended to do to it.
Jer. 26:3. It may be that they will listen, all of them, and will turn from their evil way, that I may change my mind about the disaster that I intend to bring on them because of their evil doings.
Jer. 26:13. Now therefore amend your ways and your doings, and obey the voice of the Lord your God, and the Lord will change his mind about the disaster that he has pronounced against you.
Jer. 26:19. Did King Hezekiah of Judah and all Judah actually put him to death? Did he not fear the Lord and entreat the favor of the Lord, and did not the Lord change his mind about the disaster that he had pronounced against them? But we are about to bring great disaster on ourselves!"
In all of these passages, the identical Hebrew word is used in reference to God changing his mind upon learning information previously unknown to Him.
All quotations from Scripture are from the NRSV unless otherwise noted.