What does Isaiah 22:6 mean?
In this chapter, Isaiah is discussing the onslaught against Jerusalem (Isaiah 22:2–5). This event is likely either an invasion by the Assyrians in 701 BC, or one in Isaiah's future: that of the Babylonians in 586 BC. Whichever invaders are being referenced, they brought fighters from other nations. This was a common practice of the Assyrians.In the previous chapter, Isaiah seemed to call for Elam and the Medes to join Assyria in the attack against Babylon, or perhaps to defend Babylon (Isaiah 21). Now it appears that some from Elam have been pressed into joining the attack against Jerusalem. The Elamite fighters are archers with chariots and horsemen.
It is unknown where exactly Kir was. Some suggest it may have been near Elam since they are mentioned together. Others place it in Syria because of its mention in Amos 9:7. The Kir fighters were said to carry shields and uncover them for battle.