'Fruitful' in the Bible

Now let me sing for my greatly Beloved [Lord]A song of my Beloved about His vineyard (His chosen people).My greatly Beloved had a vineyard on a very fertile slope (the promised land, Canaan).

The Lord will consume the glory of Assyria’s forest and of its fruitful garden, both soul and body,And it will be as when a sick man wastes away.

“Yet gleanings will be left in the land [of Israel] like the shaking of the olive tree,Two or three olives on the topmost branch,Four or five on the [outermost] branches of the fruitful tree,”Declares the Lord, the God of Israel.

Is it not yet a very little whileUntil Lebanon will be turned into a fertile field,And the fertile field regarded as a forest?

Beat your breasts [in mourning] for the beautiful fields, for the fruitful vine,

Until the Spirit is poured out upon us from on high,And the wilderness becomes a fertile field,And the fertile field is valued as a forest.

Then justice will dwell in the wilderness,And righteousness will live in the fertile field.