The LORD’s Vineyard
The chapter begins with the LORD taking up His sharp and mighty sword against Leviathan, the fleeing and twisting serpent, to slay the dragon of the sea and declare His victory over hostile chaos. That victory gives way to a new song of the vineyard: unlike the neglected vineyard earlier in Isaiah, this one is constantly watered and guarded by the LORD Himself, who invites any adversary either to face His fire or to make peace, and who promises that Jacob will take root, blossom, and fill the world with fruit.
I1n that day the LORD will take His sharp, great, and mighty sword, and bring judgment on Leviathan the fleeing serpent — Leviathan the coiling serpent— and He will slay the dragon of the sea. 2In that day: 3I, the LORD, am its keeper; 4I am not angry. 5Or let them lay claim to My protection; 6In the days to come, Jacob will take root.
Isaiah then asks whether Israel has been struck as harshly as her oppressors, and the answer is no: God's contention with her has been measured, using exile and hardship as a disciplinary wind rather than a total consuming blow. The goal of that discipline is the atonement of Jacob's guilt through the smashing of idolatrous altars, while the fortified city of rebellion is left desolate, showing that what God preserves in His people He destroys in their sin and in the proud systems built against Him.
7Has the LORD struck Israel as He struck her oppressors? 8By warfare and exile You contended with her 9Therefore Jacob’s guilt will be atoned for, 10For the fortified city lies deserted — 11When its limbs are dry,
The final movement portrays the LORD threshing from the Euphrates to the Wadi of Egypt and gathering the Israelites one by one, a picture of deliberate and personal regathering rather than vague restoration. When the great ram's horn sounds, those perishing in Assyria and those exiled in Egypt come home to worship the LORD on the holy mountain in Jerusalem, completing the chapter with reunion, worship, and covenant nearness.
12In that day the LORD will thresh from the flowing Euphrates to the Wadi of Egypt, and you, O Israelites, will be gathered one by one. 13And in that day a great ram’s horn will sound, and those who were perishing in Assyria will come forth with those who were exiles in Egypt. And they will worship the LORD on the holy mountain in Jerusalem.