My own related comment: I don't know why the Muslims bother terrorizing the West. With our below replacement level fertility and the Islamic prohibition of birth control, they will take over the world in a generation or so anyway. At this very moment we are witnessing the birth of a new Islamic state: "Eurabia." What's the need of terrorism when those you would terrorize are killing themselves off with below replacement fertility levels?
Having lots of kids won't get you to heaven, but "Lo, children are an heritage of the LORD: and the fruit of the womb is his reward. As arrows are in the hand of a mighty man; so are children of the youth. Happy is the man that hath his quiver full of them: they shall not be ashamed, but they shall speak with the enemies in the gate." [Psalm 127]
Not trusting God to plan our families, especially with the growing threat of our much more reproductive Islamic enemies, provides a unique perspective on the first verse of that same Psalm: "Except the LORD build the house, they labour in vain that build it: except the LORD keep the city, the watchman waketh but in vain."