9. wheat . . . barley, &c.--Instead of simple flour used for delicate cakes (Ge 18:6), the Jews should have a coarse mixture of six different kinds of grain, such as the poorest alone would eat.
      fitches--spelt or dhourra.
      three hundred and ninety--The forty days are omitted, since these latter typify the wilderness period when Israel stood separate from the Gentiles and their pollution, though partially chastened by stint of bread and water (Eze 4:16), whereas the eating of the polluted bread in the three hundred ninety days implies a forced residence "among the Gentiles" who were polluted with idolatry (Eze 4:13). This last is said of "Israel" primarily, as being the most debased (Eze 4:9-15); they had spiritually sunk to a level with the heathen, therefore God will make their condition outwardly to correspond. Judah and Jerusalem fare less severely, being less guilty: they are to "eat bread by weight and with care," that is, have a stinted supply and be chastened with the milder discipline of the wilderness period. But Judah also is secondarily referred to in the three hundred ninety days, as having fallen, like Israel, into Gentile defilements; if, then, the Jews are to escape from the exile among Gentiles, which is their just punishment, they must submit again to the wilderness probation (Eze 4:16).

JFB.