Psychiatrists and psychologists have identified a segment of people in our society who are ruthless predators.
They lack a conscience and they lack empathy. They call these people psychopaths.
The hallmark is that they don't feel guilt, remorse, or empathy.
It's easy for these people to kill other people because they don't feel stressed.
There's been research on psychopaths that oftentimes their pulse doesn't even increase when they're committing a crime.
For thousands of years, however, before the term psychopath was ever coined,
the Bible warned us about a group of people who had no conscience and have no empathy.
The Bible calls these people reprobates.
The Bible says in 2 Timothy 3.8 that they are men of corrupt minds reprobate concerning the faith.
The Bible also says in 1 Timothy 4.2 that their conscience is seared with a hot iron.
So as usual, society and science eventually catches up with the Bible.