The Jubilee is the year that follows the passage of seven “weeks of years”. This fiftieth year deals largely with land, property, and property rights. According to regulations found in the Book of Leviticus, certain indentured servants would be released from servitude, some debts would be forgiven, and everyone was supposed to return to their own property in jubilee years.
Israeli stamp commemorating the Jewish National Fund and quoting Leviticus 25:23: "The land must not be sold permanently…"
The Levites sound the trumpet of Jubilee (1873 illustration)
The sabbath year, also called the sabbatical year or shǝvi'it, or "Sabbath of The Land", is the seventh year of the seven-year agricultural cycle mandated by the Torah in the Land of Israel and is observed in Judaism.
Shmita
Shmita placard in an agricultural field (in the year 5782)
Field left uncultivated in observance of the shmita year near Rosh HaAyin (2007)
Proclamation of Chief Rabbi, Rav Avraham Yitzchak HaKohen Kook, Regarding The Importance of Shemitah Observance, and collecting for a communal fund to support those who observe shmita without compromise.