for that matter the idea that information and knowledge is 'created' by man exercising free will is also neoplatonic.
so you have God ever-increasing in knowledge as you yourself create the universe around you, making the God of five minutes from now infinitely greater in understanding than the God of five minutes ago.
but scripture says He knows our thoughts before we think them -
Psalms 139:4
For [there is] not a word on my tongue, [But] behold, O LORD, You know it altogether.
and all our deeds before we do them -
Psalms 139:16
Your eyes saw my substance, being yet unformed. And in Your book they all were written, The days fashioned for me, When [as yet there were] none of them.
open theism isn't compatible with this. it's an attempt to reconcile the mystery of God's total knowledge and power with mankind's free agency, by placing our will above God's understanding. but what does David say, meditating on the all-encompassing omniscience of God, concerning his own life and thoughts and ways?
Psalms 139:6
[Such] knowledge [is] too wonderful for me; It is high, I cannot [attain] it.