"Seeing his days are determined, the number of his months are with thee, thou hast appointed his bounds that he cannot pass" -- Job 14:5"And said, Naked came I out of my mother's womb, and naked shall I return thither: the LORD gave, and the LORD hath taken away; blessed be the name of the LORD." -- Job 1:21
" It is almost universally admitted that God determines when, where, and under what circumstances, each individual of our race shall be born, live, and die, whether it shall be male or female, white or black, wise or foolish. God is no less sovereign in the distribution of His favors. He does what He will with His own. To some He gives riches, to others honor, to others health, to others certain talents for music, oratory, art, finance, statesmanship, etc. Others are poor, unknown, born in dishonor, the victims of disease, and live lives of wretchedness. Some are placed in Christian lands where they receive all the benefits of the Gospel; others live and die in the darkness of heathenism. Some are brought through faith unto salvation; others are left to perish in unbelief. And to a very large extent these external things, which are not the result of individual choice, decide the person's life course and eternal destiny. Both Scripture and every day experience teach us that God gives to some what He withholds from others. If it be asked why He does this, or why he does not save all, the only available answer is found in the words of the Lord Jesus, "Yea, Father, for so it was well pleasing in thy sight." Only the Scripture doctrine of the fall and redemption will give us any light on what we see about us..."
Take Passover, for example. The Spirit had to have a 'marker' (blood) in order to 'know' which household not to visit...the samne Spirit who knows what's in everyone's heart...