In these verses, if I mistake not, the Lord is pointing to the cause of his mercy to his people, in delivering them from Assyria. It is not for their righteousness, for the parallel scripture saith, the Lord doeth it for his own sake, and for his servant David's sake, Isaiah 37:35. What is this but God's grace, in his own covenant-engagements, which he will fulfil, for his own glorious name's sake, and with an eye to the salvation by David his Holy One, even the Lord Jesus Christ? Hence therefore, when the pride and fatness of his own hypocritical people are brought down, and a leanness of soul is induced, and all their fancied glory done away; as was the case when king Hezekiah desired the Prophet to lift up a cry for the remnant that was left; then was the loftiness of man brought down, and the Lord of hosts alone exalted, in that day. See Isaiah 2:11; Isaiah 2:11.
Related Commentaries of Isaiah 10:16
Isaiah 10:16-19
16 Therefore shall the Lord, the Lord of hosts, send among his fat ones leanness; and under his glory he shall kindle a burning like the burning of a fire.
17 And the light of Israel shall be for a fire, and his Holy One for a flame: and it shall burn and devour his thorns and his briers in one day;
18 And shall consume the glory of his forest, and of his fruitful field, both soul and body: and they shall be as when a standardbearer fainteth.
19 And the rest of the trees of his forest shall be few,f that a child may write them.