What is commonsense? Well, here is what the dictionary says.
: sound and prudent judgment based on a simple perception of the situation or facts
\\She’s very smart but doesn’t have a lot of common sense.
\\rely on common sense for personal safety
Apparently, commonsense is just the minimal amount of good sense most of us have, but what is good sense? Well, here is the applicable definition.
6a: capacity for effective application of the powers of the mind as a basis for action or response : INTELLIGENCE
b: sound mental capacity and understanding typically marked by shrewdness and practicality
also : agreement with or satisfaction of such power
\\this decision makes sense
Notice that the definition of “sense” here is secular. Does “practicality” address the ability to discern good from evil? No.
Supposedly, people suddenly started using the word “commonsense” the way we do today in 1726 (see here (etymonline.com)). However, when Thomas Paine wrote Commonsense in 1776, he obviously thought commonsense included a certain amount of wisdom, the ability to discern good from evil, not just basic survival skills. What has changed?
We have tried to replace Christian values with secular, universal values. In practice there is no such thing as universal values, at least not what those peddling the concept would have us believe. Our conscience may tell stealing, lying, murder, and such are wrong, but in most human societies the government defines justice and enforces “justice” with brute force. That is, elites rule based upon the concept might makes right.
Why would man believe might makes right? It seems quite practical. We tend judge ourselves and others from our own point of view. Here is how the Bible puts it at the end of the Book of Judges.
Judges 21:25 English Standard Version (ESV)
25 In those days there was no king in Israel. Everyone did what was right in his own eyes.
God wanted the people to make Him their king, to do what is right in His eyes. That is not what the people chose to do. Therefore, without any king to set a common standard of right and wrong — to define justice — Israel was a scary place. Each man judged his own cause and use brute force to get his way.
In practice, without God as our king, we have only one shared, secular, universal value, might makes right. Think not? Then imagine the military forces of the United States bereft of our Christian heritage. Imagine a United States sharing only secular, universal values. Instead of being our protectors, our military forces would rule us. That’s the difference between doing what is right in our own eyes and God’s eyes.