Leviticus 25:19-22

19Then the land will yield its fruit, so that you can eat your fill and dwell in safety in the land.

20Now you may wonder, ‘What will we eat in the seventh year if we do not sow or gather our produce?’ 21But I will send My blessing upon you in the sixth year, so that the land will yield a crop sufficient for three years. 22While you are sowing in the eighth year, you will be eating from the previous harvest, until the ninth year’s harvest comes in.