● Matt 5:21-22a . . You have heard that it was said to the people long ago: Do not murder, and anyone who murders will be subject to judgment. But I tell you that anyone who is angry with his brother will be subject to judgment.
I think it's safe to assume that the anger spoken of in that passage is a malicious kind of anger eating away at somebody who wants you dead. (cf. 1John 3:15)
● Matt 5:22b . . . Again, anyone who says to his brother "Raca" is answerable to the Sanhedrin.
Raca refers to name-calling, especially in regard to intelligence, e.g. idiot, moron, dummy, lame brain, space cadet, Neanderthal, air head, dimwit, bird brain, knuckle dragger, doofus, jackass, ignoramus, etc.
● Matt 5:22c . . But anyone who says "You fool" will be in danger of the fire of hell.
"You fool" in this case refers to a particular kind of mental cruelty that makes people-- especially growing children --feel bad about themselves, i.e. makes people feel like they don't count and/or don't matter, like they are something less than a real human being.
Demeaning comments in the "you fool" category erode someone's self respect to where they feel like they don't belong: they're unnecessary, unwelcome, and unworthy of being included, listened to, and/or taken seriously.
There's a certain amount of poetic justice in Matt 5:22c. People that make others' lives a living hell in this life via you-fool remarks, fully deserve their own lives to be a living hell in the next.
● Matt 12:36-37 . . I tell you that men will have to give account on the day of judgment for every careless word they have spoken. For by your words you will be acquitted, and by your words you will be condemned.
TALLY UPDATE: 466 days have elapsed since beginning the thread. If the figures in post #1 are in the ball park, then something like 28,383,594 arrivals have checked into the fiery sector of hades since Sept 03, 2018.