(Pro 24:8 KJV) He that deviseth to do evil shall be called a mischievous person.
I wonder. How many times in Proverbs does God point out to us that some people “do evil” (7489a) on purpose? I don’t wonder enough to spend the time going through and counting but I will tell you it is repeated. Again we see that “evil” (7489a) is often the result of devising, not accident.
In our age of being nice we have a hard time with this. Our culture teaches that man is good in his natural state. The world teaches that corruption comes from society. I am not sure where they think society comes from but they deny that evil lurks in the hearts of men. Your college professor taught you the opposite of what the Bible teaches if that was his viewpoint.
So? We are surrounded by people controlled by their sin. I would hope that the Holy Spirit has worked in your life so that you are not one of them. If not I hope you are seeking that transformation. Don’t be a “mischievous person” (schemer NASB) (1167/4209).