Leviticus 25:8-10 New Revised Standard Version (NRSV)
The Year of Jubilee
8 You shall count off seven weeks[a] of years, seven times seven years, so that the period of seven weeks of years gives forty-nine years. 9 Then you shall have the trumpet sounded loud; on the tenth day of the seventh month—on the day of atonement—you shall have the trumpet sounded throughout all your land. 10 And you shall hallow the fiftieth year and you shall proclaim liberty throughout the land to all its inhabitants. It shall be a jubilee for you: you shall return, every one of you, to your property and every one of you to your family.