I recently finished reading a book called The Genesis of Science: How the Christian Middle Ages Launched the Scientific Revolution by James Hannam. The title appealed to me when I first heard of the book because of a fiction that has been promulgated since the mid-1800s of a war between religion and science. Nothing could be further from the truth. All the great strides of early science were made by Christians because they wanted to glorify their Creator by discovering how a universe created for us worked.
While some science was done by ancient Greeks, and Muslims and Chinese of the Middle Ages, it was in the Christian West where science as a continually expanding discipline was established. How ironic, then, that science has been used by secularists for the last 150 years as a battering ram against Christians. How even more ironic that we can thank Jesus of Nazareth for all the blessings of modern science and technology! Of course Christians know this, and do thank him for these blessings all the time, but just in an historical sense, without Jesus we’d still likely be stuck in some kind of “dark ages.”
In a chapter on “The Workings of Man: Medicine and Anatomy,” Hannam introduces us to English physician William Harvey, who discovered how blood circulated in the human body (or any animal for that matter). Our understanding of the heart and circulation is still based on Harvey’s work. Here’s how Hannam describes it:
Our understanding of the heart and circulation is still based on Harvey’s work. When blood leaves the heart through a pipe called the aorta, it is full of oxygen which makes it bright red. The oxygenated blood is carried all the way around the body by the arteries, which in turn branch into ever-smaller vessels until they become too tiny to see with the naked eye. These microscopic capillaries are so narrow that the blood cells can only get through them in single file. The capillaries pass the blood through the tissues of the body where the oxygen is unloaded. They then carry the deoxygenated blood, now a purple-blue color, into broader veins. These connect together like tributaries of a great river, which eventually flows back into the heart.
The heart itself is divided into two halves, separated by a thick imp impermeable muscular wall. In each half there are two interconnected chambers, an atrium and a ventricle. The atriums provide a reservoir for blood that is waiting to be pumped by the respective ventricles. The blood that has circulated around the body flows into the right-hand atrium and is then pumped by the right ventricle to the lungs through the pulmonary artery. There it is re-oxygenated and returns to the left atrium to be pumped back through the aorta by the left ventricle.
Any rational person not steeped in a prior commitment to naturalism (i.e. atheism) would have to conclude that such an intricate and exquisite instrument must have been designed. My response when I read this: There is a God! Do atheists really expect us to believe this is a cosmic coincidence? Seriously?
You may be familiar with the “New atheists.” There is one thing about them that distinguishes them from the “old” atheists. They are convinced that children are naturally born atheists, and that religious people brainwash their kids to turn them into believers in God. But it doesn’t take brainwashing to convince children that God is the creator of the universe. Just let them read a description and see an example of the human circulatory system, and they’ll know instinctively that such a marvel of engineering was no accident.