'Fiftieth' in the Bible

You shall thus consecrate the fiftieth year and proclaim a release through the land to all its inhabitants. It shall be a jubilee for you, and each of you shall return to his own property, and each of you shall return to his family.

You shall have the fiftieth year as a jubilee; you shall not sow, nor reap its aftergrowth, nor gather in from its untrimmed vines.