Is every person's conception and birth a sovereign act of God?

Les explains that it takes one sperm and one ova to make a child, and he presents the idea that the sovereign God supernaturally predetermines which sperm fertilizes which ova. He calls this mind-boggling, yet when he thinks of the billions of people on the planet, he affirms that every one of them is a sovereign act of God. He says he believes this more and more. Les extends the same sovereignty to everyday experience, thanking God each morning for the day and reflecting on all that had to transpire for him and his wife to meet, fall in love, and spend 43 years together—an act of God. He says this is true not just for them but for most, and he enjoys hearing how couples met. He warns never to sell short the sovereignty of God and says it was only by His grace that He reached down and chose us. Yet he is careful for the unbeliever: don't worry about whether you're chosen or not; believe the gospel, and once you believe, God will move in grace and show these truths little by little.