IV. The healing virtue of this river. The waters of the sanctuary, wherever they come and have a free course, will be found a wonderful restorative. Being brought forth into the sea, the sulphureous lake of Sodom, that standing monument of divine vengeance, even those waters shall be healed (v. 8), shall become sweet, and pleasant, and healthful. This intimates the wonderful and blessed change that the gospel would make, wheresoever it came in its power, as great change, in respect both of character and condition, as the turning of the dead sea into a fountain of gardens. When children of wrath became children of love, and those that were dead in trespasses and sins were made alive, then this was fulfilled. The gospel was as that salt which Elisha cast into the spring of the waters of Jericho, with which he healed them, 2 Kings ii. 20, 21. Christ, coming into the world to be its physician, sent his gospel as the great medicine, the panpharmacon; there is in it a remedy for every malady. Nay, wherever these rivers come, they make things to live (v. 9), both plants and animals; they are the water of life, Rev. xxii. 1, 17. Christ came, that we might have life and for that end he sends his gospel. Every thing shall live whither the river comes. The grace of God makes dead sinners alive and living saints lively; everything is made fruitful and flourishing by it. But its effect is according as it is received, and as the mind is prepared and disposed to receive it; for (v. 11) with respect to the marshes and miry places thereof, that are settled in the mire of their own sinfulness, and will not be healed, or settled in the moisture of their own righteousness, and think they need no healing, their doom is, They shall not be healed; the same gospel which to others is a savour of life unto life shall to them be a savour of death unto death; they shall be given to salt, to perpetual barrenness, Deut. xxix. 23. Those that will not be watered with the grace of God, and made fruitful, shall be abandoned to their own hearts' lusts, and left for ever unfruitful. He that is filthy, let him be filthy still. Never fruit grow on thee more for ever. They shall be given to salt, that is, to be monuments of divine justice, as Lot's wife that was turned into a pillar of salt, to season others.