It is good that you pick Jesus' sparrow passage. The Matthew version follows:
28 Do not be afraid of those who kill the body but cannot kill the soul. Rather, be afraid of the One who can destroy both soul and body in hell. 29 Are not two sparrows sold for a penny? Yet not one of them will fall to the ground outside your Fathers care.[b] 30 And even the very hairs of your head are all numbered. 31 So dont be afraid; you are worth more than many sparrows.
Notice that the passage you mention, sparrows, is joined with the other side of the equation "hairs of your head".
It does not in this passage mention the number being known, although that number is known. Notice, instead, that they are NUMBERED, that is, they are limited by the number God has ordained.
This is the case in the Bible in many lives in which are told of God determining the beginning, the middle, and the end of days for any number of people. If God "over-determines" any life, then God can determine all lives.
Computer is up; I hope to address your and Alamo-Girl's thoughts on sin, Romney, Israel, and Obama at some point today.
I'm also hoping to hear that ObamaCare has been struck down by Scotus.
Personally, I see both in Scripture: commandments (free will) and prophecy (predestination).