Israeli Jews had an interesting system in the Bible where the land was divided among the tribes eternally, but individuals could lease the land from the owners. However, periodically, every 99 or 75 or so years, all land would revert back to the original owners, and the slate would be clean. The owners could then lease it out again if they wanted, or not.
Every 50 years. That is the jubilee debt forgiveness spoken of.
Needless to say, application of the jubilee is moral only if you are on notice when it will be applied.
The Year of Jubilee is spoken of in Leviticus. It was the year after 7 Sabbath years, (i.e. 7 x 7 = 49) and the 50th year was the year of Jubilee. There were implications for land ownership, IIRC, I don’t think it was “debt reduction” in the sense this guy is talking about. Land had to lay fallow. I’ll have to go back and red the passage...google Year of Jubilee and Leviticus and I bet you’ll come up with the exact passage.