Hosea 9:2

‘The threshing-floor and the oil-press will not feed them,

And the new wine will fail her.'

They were to recognise that in the not too distant future they would discover that their threshing floors and oil presses would no longer provide food for them, and that their new wine would fail. This would be because they were no longer in Israel, having been transported to a foreign country. For the threefold combination of grain, oil and wine see Hosea 2:8.

The oil-press, and the wine-press, would be a hole made in the ground with its bottom at two levels one below the other. The grapes and olives would be trampled on the top level and the juice would then seep through to the bottom level.