Does not sound like anything from the Bible I have ever read. Theres other commentary on this HN post about the many meanings of the name though.
It is - the book of Matthew, specifically.
You're thinking of "Raca" from Matthew, it wouldn't make sense for him to call it based on that verse though since it's not a pleasant word. Jesus specifically says not to call your brother Raca. Why would he call his language that...
I think the comment was asking about the quote in the linked comment, not the name (which was chosen as an alias many months ago).
Of course it's from the Bible -- as a quick google would have told you. It's Mark 2:21-22.
That's "rhakos" and doesn't explain it well since this comes from "Rakudo", but Rhakos means torn off cloth according to Strong's Greek concordance. I guess it fits though.
I know he’s a man of faith as they say. No judgement of any kind intended.