NRSV

[1] An Oracle:

The word of the LORD concerning Israel: Thus says the LORD, who stretched out the heavens and founded the earth and formed the human spirit within: [2] See I am about about to make Jerusalem a cup of reeling for all the surrounding peoples, it will be against Judah also in the siege against Jerusalem. [3] On that day I will make Jerusalem a heavy stone for all the peoples; all who lift it shall grievously hurt themselves.  And all the nations of the earth shall come together against it. [4] On that day, says the LORD, I will strike every horse with panic, and its rider with madness.  But on the house of Judah, I will keep a watchful eye, when I strike every horse of the peoples with blindness. [5] Then the clans of Judah shall say to themselves, “The inhabitants of Jerusalem have strength through the LORD of hosts, their God.”

LXX

[1] The receipt of the word of the Lord upon Israel: Says the Lord who stretches the heavens and founds the earth and forms the spirit of human in it: [2] See I place Jerusalem as doorways being shaken to all the peoples circling, and in Judaea a siege shall be against Jerusalem. [3] And it shall be on this day that I shall place Jerusalem as a stone being trampled.  And who tramples it mocking shall mock, and all the nations of the earth shall unite against it. [4] In this day, says the Lord Almighty, I shall strike every horse in ecstasy and its rider in frenzy, but upon the house of Judah I shall open my eyes and every horse of the peoples I shall strike en blindness.  [5] And the rulers of thousands of Judah shall say in their hearts “We shall discover for ourselves the inhabitants of Jerusalem in the Lord Almighty their God. 

Notes on Text

Ostensibly this chapter was originally a separate and distinct composition from the preceding chapter, or at least came to be viewed that way in the Hebrew tradition. This is indicated by the opening phrase “An Oracle” in the NRSV text.  This is notably absent from the LXX text which suggests to me it was a later scribal addition in the Hebrew manuscript tradition.  There are some other differences between the two manuscript traditions, but broadly speaking this imagery is reminiscent of some of the imagery in Zechariah 9-10, in which Jerusalem is similarly plagued by enemies and those enemies are similarly defeated by God’s wrath.   

In the NRSV text, this is fairly straightforward, where Jerusalem is a “cup of reeling” and a “heavy stone” with which Jerusalem’s besiegers struggle before being blinded .  The LXX text is more difficult, it describes Jerusalem as “doorways being shaken” and a “stone being trampled.” The meaning of the first description is obscure (presumably it is difficult to enter?), the second description seems to say that Jerusalem will in fact be trampled and then mocked, before ultimately God smites its besiegers.  

In both versions, but especially in the LXX text, the relationship between Jerusalem and Judah is quite ambiguous.  The NRSV text in vv. 2 reads “…it will be against Judah also in the siege against Jerusalem,” where “it” seems to refer to the “cup of reeling” and thus there is an implication that Judah is also one of Jerusalem’s besiegers. Similarly in the NRSV vv. 4, Judah seems to be among the ones who are frenzied, although God promises to keep a watchful eye on them.  In the LXX, you could plausibly read the Greek text the way I have translated it, in which God seems to promise to smite at least the horses of Judah just like the rest of the besiegers.  It should be noted that the NETS text of this same verse uses some additional punctuation to create a meaning that is closer to the NRSV text:

On that day, says the Lord Almighty, I will strike every horse with alarm and its rider with derangement – but on the house of Ioudas I will open my eyes – and all the horses of the peoples I will strike with blindness. 

In both cases Judah seems to find Jerusalem an example of faithfulness. This introduces the possibility that the author here is viewing Jerusalem as distinct from Judah, Israel, etc. and unique in its faith.