Shall go forth a remnant - The word ‘remnant’ means that which is left; and does not of necessity imply that it should be a small portion. No doubt a part of the Jews were destroyed in the invasion of Sennacherib, but the assurance is here given that a portion of them would remain in safety, and that they would constitute that from which the future prosperity of the state would arise.
And they that escape - Margin, ‘The escaping,’ that is, the remnant.
The zeal - (See the note at Isaiah 9:7).