The answer is: Every 50 years

Lev 25:10 - The Jubilee year restored property and freedom, resetting economic inequalities.

In the world of ancient Israel, the Jubilee year was nothing short of revolutionary! Every 50 years, this significant event served as a divine reset button for the community. Imagine living in a society with nearly unattainable bartering norms and enshrined property lines, only to have the chance to restore balance, freedom, and equity. Just think—a family could reclaim land that had been lost due to misfortune or debt. Isn’t that a wonderful vision of social justice and communal welfare?

Interestingly, the roots of this concept may stretch deeper, echoing themes of liberation found in various ancient cultures. In Mesopotamia texts, for example, cycles of debt forgiveness reveal that notions of social responsibility and fair treatment transcended cultures. So, Jubilee isn't just a unique Jewish practice; it's part of a more extensive tapestry of communal reinvestment across civilizations.

Jubilee offered more than just restoration of land. It also was a proclamation of freedom—individuals who were indentured servants were released, effectively breaking chains that bound them to socioeconomic despair. Operating from a wider biblical context, this echoes the calls for justice seen in other prophetic writings.

But here's a playful thought: with today’s financial systems leaning towards wealth concentration, we may still seek out modern equivalents of this “reset”—concerted efforts for systemic reform in economics and social justice that encourage shared prosperity. Of course, striving for systems where equity reigns feels as fresh and pressing today as it did thousands of years ago!