9:1 O that my head were {a} waters, and my eyes a fountain of tears, that I might weep day and night for the slain of the daughter of my people!
(a) The prophet shows the great compassion that he had toward this people, seeing that he could never sufficiently lament the destruction that he saw to hang over them, which is a special note to discern the true pastors from the hirelings. See Geneva Jer 4:19
9:1-11 Jeremiah wept much, yet wished he could weep more, that he might rouse the people to a due sense of the hand of God. But even the desert, without communion with God, through Christ Jesus, and the influences of the Holy Spirit, must be a place for temptation and evil; while, with these blessings, we may live in holiness in crowded cities. The people accustomed their tongues to lies. So false were they, that a brother could not be trusted. In trading and bargaining they said any thing for their own advantage, though they knew it to be false. But God marked their sin. Where no knowledge of God is, what good can be expected? He has many ways of turning a fruitful land into barrenness for the wickedness of those that dwell therein.
