The Bible disagrees with you strongly. He most certainly DOES choose who He will save.Again, God see's before hand through His foreknowledge, who will be saved and who will not, but it is still each person's choice.
Because He see's the end from the beginning, doesn't mean He chooses who will and who will not will be saved.
1 Cor 1:21 - For since in the wisdom of God the world through its wisdom did not come to know God, God was well-pleased through the foolishness of the message preached to save those who believe.
Now, since your view contradicts the Bible, please explain God being well pleased to save those who believe ISN'T a choice on His part. This should be interesting. Where's the popcorn?
Anyone can see for themselves how the various Bible translations render the word at this link:Romans 11:29 doesn't say God's gifts are irrevocable, those are your words which is why you don't post the actual scripture, you post your own opinion, then tag it with a scripture reference.
This seems to be the pattern with the OSAS camp.
It's either posting half a scripture, and another half a scripture, then leave out the context and viola: Instant heresy.
Here is what Romans 11:29 says -
For the gifts and the calling of God are irrevocable. Romans 11:29
The gifts and calling together are irrevocable.
Also - Irrevocable in the original Greek, doesn't even mean what you are claiming it means.
For the gifts and calling of God are without repentance. KJV
without repentance - Strong's G278 - ametamelētos
not repentant of, unregretted
God does not regret calling Israel into covenant, even though they have been disobedient.
29 For the gifts and the calling of God are irrevocable. 30 For as you were once disobedient to God, yet have now obtained mercy through their disobedience, 31 even so these also have now been disobedient, that through the mercy shown you they also may obtain mercy. Romans 11:29-31
http://biblehub.com/romans/11-29.htm
Now, the only issue for you is to prove that the meaning of "unregretted" or "not repentant of" can STILL result in taking back the gift. One would only have to find some verse where God removed a gift.