en_tn_condensed/deu/32/32.md

For their vine comes from the vine of Sodom ... clusters are bitter

This means their enemies are wicked and will cause the Israelites to die if the Israelites start to act like these people.

their vine comes from the vine of Sodom, and from the fields of Gomorrah

"they do evil the same way the people who lived in Sodom and Gomorrah did"

their clusters

"their clusters of grapes"