Isaiah 10:22 - Matthew Poole's English Annotations on the Holy Bible

Israel; or, O Israel; to whom by an apostrophe he directeth his speech. A remnant; or, a remnant only, as before; for that this is a threatening in respect of some, as well as a promise in respect of others, is evident from the rest of this and from the following verse. The consumption decreed shall overflow; the destruction of the people of Israel was already decreed or determined (as it is in the next verse) by the fixed counsel of God, and therefore must needs be executed, and like a deluge overflow them. With righteousness, as this word is rendered, Romans 9:28; the preposition in or with being here understood, as it is every where. And this is added, to show, that although this judgment of God may seem very severe, yet it is most just, not only by the laws of strict and rigid justice, but even by the rules of equity and clemency, as this word oft signifies, inasmuch as he hath spared a considerable remnant of them, when he might have destroyed, them utterly. And so this word is added as a reason why a remnant, and why but a remnant, should return, because God would both glorify his justice, and manifest his mercy. And in this mixed sense the apostle seems to expound this place, Romans 9:27,28.