Psalm  139:14 declares, “I praise you because I am fearfully and wonderfully made;  your works are wonderful, I know that full well.” The context of this verse is  the incredible nature of our physical bodies. The human body is the most complex  and unique organism in the world, and that complexity and uniqueness speaks  volumes about the mind of its Creator. Every aspect of the body, down to the  tiniest microscopic cell, reveals that it is fearfully and wonderfully  made.

Engineers understand how to design strong yet light beams by  putting the strong material toward the outside edges of a cross-section and  filling the inside with lighter, weaker material. This is done because the  greatest amounts of stress occur on the surfaces of a structure when handling  common bending or stresses. A cross section of a human bone reveals that the  strong material is on the outside and the inside is used as a factory for blood  cells of various kinds. When you examine a sophisticated camera with its ability  to let in more or less light as needed and its ability to focus automatically  over a vast range of field, you find repeated imitations of the operation of the  human eye. And yet, having two eyeballs, we also have depth perception which  gives us the ability to judge how far away an object is.

The human brain  is also an amazing organ, fearfully and wonderfully made. It has the ability to  learn, reason, and control so many automatic functions of the body such as heart  rate, blood pressure, and breathing, and to maintain balance to walk, run,  stand, and sit, all while concentrating on something else. Computers can outdo  the human brain in raw calculating power but are primitive when it comes to  performing most reasoning tasks. The brain also has an amazing ability to adapt.  In an experiment, when people put on glasses that made the world seem upside  down, their brains quickly reinterpreted the information they were being given  to perceive the world as “right-side-up.” When others were blindfolded for long  periods of time, the “vision center” of the brain soon began to be used for  other functions. When people move to a house near a railroad, soon the sound of  the trains is filtered out by their brains, and they lose conscious thought of  the noise.

When it comes to miniaturization, the human body is also a  marvel fearfully and wonderfully made. For instance, information needed for the  replication of an entire human body, with every detail covered, is stored in the  double-helix DNA strand found in the nucleus of each of the billions of cells in  the human body. And the system of information and control represented by our  nervous system is amazingly compact in comparison to man’s clumsy inventions of  wires and optical cables. Each cell, once called a “simple” cell, is a tiny  factory not yet fully understood by man. As microscopes become more and more  powerful, the incredible vistas of the human cell begin to come into focus.

Consider the single fertilized cell of a newly conceived human life.  From that one cell within the womb develop all the different kinds of tissues,  organs, and systems, all working together at just the right time in an amazingly  coordinated process. An example is the hole in the septum between the two  ventricles in the heart of the newborn infant. This hole closes up at exactly  the right time during the birth process to allow for the oxygenation of the  blood from the lungs, which does not occur while the baby is in the womb and is  receiving oxygen through the umbilical cord.

Further, the body’s immune  system is able to fight off so many enemies and restore itself from the smallest  repair (even repairing bad portions of DNA) to the largest (mending bones and  recovering from major accidents). Yes, there are diseases that will eventually  overcome the body as we age, but we have no idea how many times through a  lifetime that our immune systems have saved us from certain death.

The  functions of the human body are also incredible. The ability to handle large,  heavy objects and to also carefully manipulate a delicate object without  breaking it is also amazing. We can shoot a bow with the arrow repeatedly  hitting a distant target, peck away quickly at a computer keyboard without  thinking about the keys, crawl, walk, run, twirl around, climb, swim, do  somersaults and flips, and perform “simple” tasks such as unscrewing a light  bulb, brushing our teeth, and lacing up our shoes—again without thinking.  Indeed, these are “simple” things, but man has yet to design and program a robot  that is able to perform such a vast range of tasks and motions.

The  function of the digestive tract and the related organs, the longevity of the  heart, the formation and function of nerves and of blood vessels, the cleansing  of the blood through the kidneys, the complexity of the inner and middle ear,  the sense of taste and smell, and so many other things we barely understand—each  one is a marvel and beyond man’s ability to duplicate. Truly, we are fearfully  and wonderfully made. How grateful we are to know the Creator—through His Son,  Jesus Christ—and to marvel not only at His knowledge but also at His love (Psalm 139:17-24).