Leviticus 25:18-22

18Wherefore ye shall do my statutes, and keep my judgments, and do them; and ye shall dwell in the land in safety. 19And the land shall yield her fruit, and ye shall eat your fill, and dwell therein in safety. 20And if ye shall say, What shall we eat the seventh year? behold, we shall not sow, nor gather in our increase: 21Then I will command my blessing upon you in the sixth year, and it shall bring forth fruit for three years. 22And ye shall sow the eighth year, and eat yet of old fruit until the ninth year; until her fruits come in ye shall eat of the old store.