In the Bible, "At the end of every seventh year you must cancel the debts of everyone who owes". In Judaism, on Shmita years debt is remitted. On Jubilee year

In the Bible, "At the end of every seventh year you must cancel the debts of everyone who owes". In Judaism, on Shmita years debt is remitted. On Jubilee year, land lost is returned. Indentured slaves are freed. (I interpret this as returning lost collateral.) 1987 was also a Shmita year. 1967 was a Jubilee year. Israel's land was returned. The long credit cycle you referred to, may it be the Kondratiev wave?