Another interpretation obviates all of the speculation about the Sabbath year entirely, translating the verse as: "And this shall be the sign for you, this year you shall eat what grows by itself, and the next year, what grows from the tree stumps, and in the third year, sow and reap, and plant vineyards and eat their fruit." According to the Judaica Press commentary, it was Sennacherib's invasion that prevented the people of Judah from sowing in the first year and Isaiah was promising that enough plants would grow to feed the population for the rest of the first year and the second year. Therefore, Isaiah was truly providing a sign to Hezekiah that God would save the city of Jerusalem, as explicitly stated, and not an injunction concerning the Sabbath ("shmita") or jubilee ("yovel") years, which are not mentioned at all in the passage.