Count off seven Sabbath years – seven times seven years – so that the seven Sabbath years amount to a period of forty-nine years.  Then have the trumpet sounded everywhere on the tenth day of “the seventh month; on the Day of Atonement sound the trumpet throughout your land.  Consecrate the fiftieth year and proclaim liberty throughout the land to all of its inhabitants.  It shall be a jubilee for you.  (Leviticus 25:8-10)