8 Thus saith the Lord, As the new wine is found in the cluster, and one saith, Destroy it not; for a blessing is in it: so will I do for My servants’ sakes, that I may not destroy them all.
9 And I will bring forth a seed out of Jacob, and out of Judah an inheritor of My mountains: and Mine elect shall inherit it, and My servants shall dwell there.
Just as the new wine or sweet juice in the cluster is valued and preserved for use, so God will preserve a remnant of Israel to be blessed in the eternal society under the Messiah. The juice of grapes being called wine while still in the cluster shows that all wine referred to was not necessarily fermented or intoxicating.
Verse 9 refers to the new eternal Israel which will be left after judgment has come upon the rebels at the 2nd advent of Christ.
The “inheritor of the mountains of God” is the Messiah Himself, as well as the new seed of Israel reserved to be blessed under Him eternally (Zech. 14; Luke 1:32-33; Rom. 11:25-29).