What does Isaiah 65:8 mean?

This is what the Lord says: Just like when you find a bunch of good grapes in a cluster and say, 'Don’t destroy it—there’s something good in there,' so I won’t destroy everyone. I’ll save some people who serve me. Isaiah 65:8 - Modern Text Bible

(Even in judgment, God looks for what’s worth saving. He won’t wipe everyone out—he’ll keep a faithful group.)