Omniscient GOD

 In light of Genesis 6 when God regrets creating mankind and Genesis 18 where Abraham prays and his pleading "changes God's mind", and other similar stories in the Bible, it's important to balance them with:

As for God, his way is perfect: The Lord's word is flawless; he shields all who take refuge in him.
-- Psalm 18:30

Great is our Lord and mighty in power; his understanding has no limit.
-- Psalm 147:5

Do you not know? Have you not heard? The Lord is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary, and his understanding no one can fathom.
-- Isaiah 40:28

Remember the former things, those of long ago; I am God, and there is no other; I am God, and there is none like me. I make known the end from the beginning, from ancient times, what is still to come. I say, "My purpose will stand, and I will do all that I please."
-- Isaiah 46:9-10

If our hearts condemn us, we know that God is greater than our hearts, and he knows everything.
-- I John 3:20

(Italics added.)

I believe GOD provides us a method of communication, as seen in Genesis 6 and 18, so as to relate to us. GOD doesn't make mistakes, or fail, nor do we "change His mind."  Like a good parent who relates to their child on the child's level, GOD relates to us; yet there is still mystery as to GOD's nature (Isaiah 55:8-9). Praying in His name is praying in "His nature", as Oswald Chambers states. It's in His nature to have a relationship with us; and one way He accomplishes that is by interacting with us in a way we can understand.
GOD is not Superman with one weakness. The aforementioned scripture referenced in Psalms, Isaiah and I John support that GOD is ALL-knowing, ALL-powerful, He is the Almighty GOD! He is the great I AM.