In Leviticus 25:8-10, we read, “Count thou seven times the years of rest, that is, seven years seven times seven; seven times seven is forty-nine years.
On the tenth day of the seventh month of that year, the Day of Atonement, you shall sound the horn of the ram. You shall blow the horn throughout the land to consecrate this fiftieth year and proclaim liberty to all the inhabitants. It is the year of Jubilee.”
The word “yobel” refers to the “ram’s horn” that is blown to mark the beginning and end of the Sabbath. The year of Jobel was the off-season for farming, when the land was left fallow. All slaves were freed and could return to their families. Those who owed debts were cleared of them.