In the OT and NT, I see a God who has limited himself by:
a) Creating a reasonably ordered universe.
b) Working in Time.
c) Giving Man Free Will. (love the all caps; gotta keep this Platonic ;)
d) Making covenants which He keeps.
Items (b) and (c) together have suggested to me for a while now that God has chosen to not see the future. One of these days I'm going to attempt to prove that, Biblically.
I agree that an all-powerful being wouldn't have to exert its power. But there are some logical conundrums that can arise (like the 'big rock' thing). But I think evidence can be found that God is supposed to be all-powerful as we understand the term in our gut.
Consider, e.g., [link|http://www.biblegateway.com/cgi-bin/bible?passage=JOB+37&language=english&version=NIV&showfn=on&showxref=on|Job 37]:
14 "Listen to this, Job;
stop and consider God's wonders.
15 Do you know how God controls the clouds
and makes his lightning flash?
16 Do you know how the clouds hang poised,
those wonders of him who is perfect in knowledge?
17 You who swelter in your clothes
when the land lies hushed under the south wind,
18 can you join him in spreading out the skies,
hard as a mirror of cast bronze?
19 "Tell us what we should say to him;
we cannot draw up our case because of our darkness.
20 Should he be told that I want to speak?
Would any man ask to be swallowed up?
21 Now no one can look at the sun,
bright as it is in the skies
after the wind has swept them clean.
22 Out of the north he comes in golden splendor;
God comes in awesome majesty.
23 The Almighty is beyond our reach and exalted in power;
in his justice and great righteousness, he does not oppress.
24 Therefore, men revere him,
for does he not have regard for all the wise in heart?"
Emphasis added.
Translations are always problematic, but this passage from Job seems to clearly indicate that God is supposed to be all-powerful.
I don't think you'll succeed in proving God has chosen not to see the future.
E.g. [link|http://www.biblegateway.com/cgi-bin/bible?passage=ISA+34&language=english&version=NIV&showfn=on&showxref=on|Isaiah 34]
1 Come near, you nations, and listen;
pay attention, you peoples!
Let the earth hear, and all that is in it,
the world, and all that comes out of it!
2 The LORD is angry with all nations;
his wrath is upon all their armies.
He will totally destroy [1] them,
he will give them over to slaughter.
3 Their slain will be thrown out,
their dead bodies will send up a stench;
the mountains will be soaked with their blood.
4 All the stars of the heavens will be dissolved
and the sky rolled up like a scroll;
all the starry host will fall
like withered leaves from the vine,
like shriveled figs from the fig tree.
5 My sword has drunk its fill in the heavens;
see, it descends in judgment on Edom,
the people I have totally destroyed.
6 The sword of the LORD is bathed in blood,
it is covered with fat-
the blood of lambs and goats,
fat from the kidneys of rams.
For the LORD has a sacrifice in Bozrah
and a great slaughter in Edom.
7 And the wild oxen will fall with them,
the bull calves and the great bulls.
Their land will be drenched with blood,
and the dust will be soaked with fat.
8 For the LORD has a day of vengeance,
a year of retribution, to uphold Zion's cause.
9 Edom's streams will be turned into pitch,
her dust into burning sulfur;
her land will become blazing pitch!
10 It will not be quenched night and day;
its smoke will rise forever.
From generation to generation it will lie desolate;
no one will ever pass through it again.
[...]
Emphasis added.
There are other passages like this, like Luke 21:25-32, that has Jesus telling what's going to happen.
I'm no Bible scholar, but I think you'll have to stretch a bit to say that there isn't evidence that the God of the Bible choses not to know the future. And of course there's the other side of the problem - Adam and Eve in the Garden of Eden with God not knowing what's up, etc.
No disrespect intended. :-)
Cheers,
Scott.