"God saves. God does not merely do enough to make salvation possible, leaving it to us to work our way up, to 'merit the merits of Christ,' to do our part to make the merely possible become the actual. Every link in the chain of redemption is forged on God's anvil from start to finish. Even God cannot achieve an end without a means. In order to secure the predestined end, he foreordains each step and casual link, sovereignly acting to see that each cause and effect occurs.
I have already shown that he had to move the entire Roman military bureaucracy several years earlier to make certain that at the end of the empirewide census, one particular pregnant girl was in the right town at the right moment just so the Messiah would be born in Bethlehem and not up north in Nazareth! The entire Roman bureaucracy was predestined to keep in step with the body chemistry of one unknown Jewish girl in the far outer reaches of the first-century Roman Empire."
-R.K. McGregor Wright, No Place For Sovereignty pg 94