1:18-21 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.

6. Gaza—the southernmost of the five capitals of the five divisions of Philistia, and the key to Palestine on the south: hence put for the whole Philistine nation. Uzziah commenced the fulfilment of this prophecy (see 2Ch 26:6).

because they carried away … the whole captivity—that is, they left none. Compare with the phrase here, Jer 13:19, "Judah … carried captive all of it … wholly carried away." Under Jehoram already the Philistines had carried away all the substance of the king of Judah, and his wives and his sons, "so that there was never a son left to him, save Jehoahaz"; and after Amos' time (if the reference includes the future, which to the prophet's eye is as if already done), under Ahaz (2Ch 28:18), they seized on all the cities and villages of the low country and south of Judah.

to deliver them up to Edom—Judah's bitterest foe; as slaves (Am 1:9; compare Joe 3:1, 3, 6). Grotius refers it to the fact (Isa 16:4) that on Sennacherib's invasion of Judah, many fled for refuge to neighboring countries; the Philistines, instead of hospitably sheltering the refugees, sold them, as if captives in war, to their enemies, the Idumeans.