Modern technology now allows us to see the astonishing complexity of a developing child with our own eyes. In a 2010 TED presentation titled Conception to Birth—Visualized, Alexander Tsiaras, mathematician and chief of Scientific Visualization at Yale University, presented a series of incredible images of a child’s development in the womb. In his production you can see never-before-viewed videos and photos of the very first cell division, the development of the heart at only twenty-five days, the development of arms and hands at only thirty-two days, and the development of the retinas, nose, and eyes at fifty-two days.

Clearly astounded by what he witnessed in his own images, Tsiaras concluded his talk with these words: “The complexity of these things, the mathematical model of how these things are indeed done, [is] beyond human comprehension. Even though I am a mathematician I look at this with the marvel of, ‘How did these instruction sets build that which is us?’ It’s a mystery, it’s magic, it’s divinity.”2

And Bible scholar John Phillips describes the magnificent complexities of our bodies at the cellular level:

We know that every living creature is made up of microscopic cells so small that the letter O on this page would contain between thirty to forty thousand of them. Each microscopic cell is a world in itself, containing an estimated two hundred trillion tiny molecules of atoms. Each cell, in other words, is a micro-universe of almost unbelievable complexity. All these cells put together make up a living creature. Each cell has its own specialized function and each works to an intricate timetable which tells it when to grow, when to divide, when to make hormones, when to die. Every minute of every day some three billion cells in the body die and the same number are created to take their place. During any given moment in the life of any one of these cells, thousands of events are taking place, each one being precisely coordinated at the molecular level by countless triggers. The human body has more than a million million of them—a million in each square inch of skin, thirty billion in the brain, billions of red blood cells in the veins. Obviously such a complicated and unerring development of cells cannot possibly be the result of chance.3

The psalmist David knew nothing of the physiological phenomena presented by Mr. Tsiaras or Dr. Phillips—of molecular structures, of cells dividing and multiplying, or even of numbers large enough to describe the massive quantity of cells in the human body. And yet when it came to the bottom line, David knew what these men know. He understood that God’s work in fashioning him was marvelous—as indeed it was.

Our Creator is an artist of infinite majesty—a craftsman of breathtaking detail. All He does is driven and guided by His infinite love for you and me.

Before You Were Born, God Knew Your Individuality