John Gill Commentary 2 Kings 19:29

"And this shall be the sign unto thee: Ye shall eat this year that which groweth of itself, 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 fruit thereof." — 2 Kings 19:29 (ASV)

(See Gill on 2 Kings 19:1)