John Gill's Exposition of the Whole Bible
Isaiah 37:32
For out of Jerusalem shall go forth a remnant,.... The Targum is,
"the rest of the righteous;''
the same as before; who, when the city should be free from the enemy, would go out of it, and return to their former settlements, in the several parts of Judea; a type of those who went out of Jerusalem with the Gospel of Christ, and spread it not only in Judea, but in the Gentile world:
and they that escape out of Mount Zion; the same persons, differently described; some of whom were in the city of Jerusalem, and others in the fort of Zion, but departed from hence when the siege was broke up. The Targum is,
"and the escaped of them that confirm the law out of Mount Zion;''
see Isaiah 2:3:
the zeal of the Lord of hosts shall do this: his concern for his own honour and glory, and his great love to his people, shall engage him to perform all that is here promised and foretold. The Targum is,
"by the word of the Lord of hosts this shall be done.''