So that's weird, but his main point is that Aramaic and, as we've discovered, most English translations and many other translations, see some level of equivalence or connection between sin and debt, as they are used as homonyms.

Also Matthew 18 ( libranet.de/display/0b6b25a8-1… ) confirms in explicit reference that not paying what you owe is an important form of wrongdoing. So even if Graeber is off on his reference, his point seems to hold.