3:18 And it shall come to pass in that day, [that] the mountains shall {l} drop down new wine, and the hills shall flow with milk, and all the rivers of Judah shall flow with waters, and a fountain shall come forth of the house of the LORD, and shall water the valley of Shittim.
(l) He promises to his Church abundance of graces, see Geneva Eze 47:1, which would water and comfort the most barren places; Am 9:13.
3:18 The mountains - The vines planted upon the mountains. Shall flow - So fruitful shall the hills be, that milk shall abound every where. A fountain - The prophet alludes to those waters which were conveyed from some spring through conduit pipes towards the altar. This no doubt is a shadow of the purifying blood of Christ, and his sanctifying spirit and word. And in that it is said to come from the house of the Lord, it intimates that this saving grace shall be first preached from Jerusalem, and by the church, which is the house of God, shall be published to others. Shittim - Was a place in the plains of Moab. These spiritual waters shall flow down to the dry and thirsty, the barren and fruitless Gentiles, and make them fruitful.
3:18-21 There shall be abundant Divine influences, and the gospel will spread speedily into the remotest corners of the earth. These events are predicted under significant emblems; there is a day coming, when every thing amiss shall be amended. The fountain of this plenty is in the house of God, whence the streams take rise. Christ is this Fountain; his sufferings, merit, and grace, cleanse, refresh, and make fruitful. Gospel grace, flowing from Christ, shall reach to the Gentile world, to the most remote regions, and make them abound in fruits of righteousness; and from the house of the Lord above, from his heavenly temple, flows all the good we daily taste, and hope to enjoy eternally.