"Did Our Souls Pre-Exist?"

"
So, without question, God 'knew us' before our human
births, yes, maybe thousands or even millions of years
before then. But was this 'knowing us' simply because
God knows the end from the beginning? Or, in some way
we cannot presently understand nor comprehend, did
God already 'know' our souls because He could view
them in Heaven, or even had them 'stored' in some part
of His Heavenly realm? That we don't know. We certainly
know that we were not chosen because God could see we..."

http://www.ukapologetics.net/15/preexistence.htm