12:17-20 The prophet must eat and drink in care and fear, with trembling, that he might express the condition of those in Jerusalem during the siege. When ministers speak of the ruin coming upon sinners, they must speak as those that know the terrors of the Lord. Afflictions are happy ones, however grievous to flesh and blood, that improve us in the knowledge of God.

18. Symbolical representation of the famine and fear with which they should eat their scanty morsel, in their exile, and especially at the siege.