Two evils. Israel has not merely offended, like the heathen, by idolatry, but by deserting the only God who can satisfy the needs of human nature. The fountain of living waters. So Jeremiah 17:13 (comp.
Psalms 36:9). Fountain; literally, tank or reservoir. Such reservoirs were "dug in the ground (see on Jeremiah 6:7), and chiefly intended for storing living waters, i.e. those of springs and rivulets" (Payne Smith).
Cisterns, broken cisterns. A cistern, by its very nature, will only hold a limited amount, and the water "collected from clay roofs or from marly soil, has the color of weak soapsuds, the taste of the earth or the stable."
Who would prefer such an impure supply to the sweet, wholesome water of a fountain? But these cisterns cannot even be depended upon for this poor, turbid drink. They are "broken," like so many even of the best rock-hewn cisterns.
How fine a description of the combined attractiveness and disappointingness of heathen religions, qualities the more striking in proportion to the scale on which the religions problem is realized (e.g.
in Hinduism)!