And this shall be a sign unto thee, Ye shall eat this year such as groweth of itself; and the second year that which springeth of the same: and in the third year sow ye, and reap, and plant vineyards, and eat the fruit thereof. And the remnant that is escaped of the house of Judah shall again take root downward, and bear fruit upward: For out of Jerusalem shall go forth a remnant, and they that escape out of mount Zion: the zeal of the LORD of hosts shall do this.
God spoke to Hezekiah and assured him that though food supplies would be limited this year and the next because of the Assyrian invasion, crops would return to normal in the third year. The people who had sought safety in Jerusalem in preparation for a siege would emerge and resume normal life. Jehovah’s zeal for His people would guarantee what He said.