Charles Ellicott Commentary Isaiah 37:32

"For out of Jerusalem shall go forth a remnant, and out of mount Zion they that shall escape. The zeal of Jehovah of hosts will perform this." — Isaiah 37:32 (ASV)

The zeal of the Lord of hosts shall do this. — Here, again, the prophet returns in his old age to the formula of the earlier days of Isaiah 9:7, with an implied reference to the grand promise with which it had then been associated.