There is Edom, her kings, and all her princes, which with their might are laid by them that were slain by the sword: they shall lie with the uncircumcised, and with them that go down to the pit.
There is Edom ... and all her princes - Edom was not only governed by kings, but by subordinate "princes" or "dukes" (Genesis 36:40).
Which with their might are laid by them that were slain by the sword - notwithstanding their might they shall be brought down (Isaiah 34:5; Isaiah 34:10-17; Jeremiah 49:7; Jeremiah 49:13-18).
They shall lie with the uncircumcised. Though Edom was circumcised, being descended from Isaac, he shall lie with the uncircumcised, much more shall Egypt, who had no hereditary right to circumcision.