2 Kings 19:29-31

29And this shall be a sign unto thee, Ye shall eat this year such things as grow of themselves, and in the second year that which springeth of the same; and in the third year sow ye, and reap, and plant vineyards, and eat the fruits thereof.

30And the remnant that is escaped of the house of Judah shall yet again take root downward, and bear fruit upward.1

31For 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.2