That God changes in some respects implies that God is temporal, working with us in time. God, at least since Creation, experiences duration. God is everlasting through time rather than timelessly eternal… We believe that God could have known every event of the future had God decided to create a fully determined universe. However, in our view, God decided to create beings with interdeterministic freedom which implies that God chose to create a universe in which the future is not entirely knowable, even for God. For many open theists, the “future” is not a present reality — it does not exist — and God knows reality as it is.

The concepts of omnipresence and immutability do not stem from the Bible, but from the subsequent fusion of Judeo-Christian thought with the Greek philosophy of Platonism and Stoicism, which posited an infinite God and a deterministic view of history (but see Malachi 3:6).

KJV
6And it repented the LORD that he had made man on the earth, and it grieved him at his heart.
7And the LORD said, I will destroy man whom I have created from the face of the earth; both man, and beast, and the creeping thing, and the fowls of the air; for it repenteth me that I have made them.