Leviticus 25
20 Ref And if you say, Where will our food come from in the seventh year, when we may not put in seed, or get in the increase
21 Ref Then I will send my blessing on you in the sixth year, and the land will give fruit enough for three years.
22 Ref And in the eighth year you will put in your seed, and get your food from the old stores, till the fruit of the ninth year is ready.