The meaning of words is important.
Example: You want your young son to be "a good boy," and you teach him to avoid evil influences:
Do not be deceived: "Bad company ruins good morals."
1 Corinthians 15:33
But then he gets to school and hears his playmates raving about a new rock band that is "BAD," by which they actually mean "very good." You've taught him to avoid "bad," but all his peers say bad is good.
Your son is being taught that you can't be trusted: what you said was good wasn't, and what you said was bad wasn't either.
This is a moral crisis in the making.
This is why God, speaking through the Prophet Isaiah, said:
Woe unto them that call evil good, and good evil;
that put darkness for light, and light for darkness;
that put bitter for sweet, and sweet for bitter!
When people deliberately call that which is evil "good," and that which is good "evil," they seek status, profit, or security, and God is forced to turn their world upside down. After all,
What shall it profit a man,
if he shall gain the whole world,
and lose his own soul?
I'm going to try to prove to you that something you've been taught is bad is really good, and what you've been taught is really really good is in fact really really bad. Millions of Christians support it even though it is bad, believing it to be good, all the while ignoring what Jesus says is good, because bad people are telling Christians to ignore it, and because Christians believe that these bad people are actually good.
I'm not talking about some "religious" idea that is purely "spiritual" or merely ceremonial. I'm not talking about some nutty idea about "prophecy" or who the anti-Christ is (this month).
I'm talking about an idea that has dominated human society for over 3,000 years, and is central to the beliefs of virtually every secular politician, left-wing university professor, and right-wing talk-show host.
I'm talking about an idea that has resulted in the deaths of millions of people, and empties thousands of dollars out of your bank account every year.
You've been trained to believe that your lowered standard of living and the deaths of millions around the world is inevitable, even "for your own good."
You've been trained to believe that people who make it illegal for your child to say the words "under God" in school are good people. You've been trained to believe that it's in the national interest for schools not to teach children that God says "Thou shalt not steal" and "Thou shalt not kill."
You've been trained to believe that the greatest evil on the planet is at worst a "necessary evil," and when someone proposes eliminating it, you claim this evil is actually the greatest good.
Get ready to have your world turned upside down.