This is what the LORD says: “As the new wine is found in a cluster of grapes, and men say, ‘Do not destroy it, for it contains a blessing,’ so I will act on behalf of My servants; I will not destroy them all.
This is expounded by St. Paul, Rom 11:1-5, where, when, upon occasion of the rejection of the Jews, it is asked, Hath God then cast away his people? he answers, No; for at this time there is a remnant according to the election of grace. This prophecy has reference to that distinguished remnant.
Commenting on Isaiah 65:8-10
Thus saith the Lord, as the new wine is found in the cluster,.... Now, lest the truly godly and gracious among these people should be distressed at such denunciations of wrath and destruction, it is suggested that these few, this remnant according to the election of grace, should be saved from the general ruin; as when men are about to cut down a vine, or...
new wine--as if some grapes having good wine-producing juice in them, be found in a cluster which the vinedresser was about to throw away as bad, and one saith, &c. blessing--that is, good wine-producing juice (compare Jdg 9:13; Joe 2:14). so--God will spare the godly "remnant," while the ungodly mass of the nation shall be destroyed (Isa 1:9; Isa 6:13; Isa 10:21; Isa 11:11-16). my servants--the godly remnant.