This is clearly proven by the fact that every time we thought the world was approaching a state of repair and that perfection was operating or starting to operate, the repair affected only Israel. But the nations of the world continued their rebellion, and the world remained in a state of ruin. There was still death, there was still impurity, and there was still an evil inclination. True perfection means there will be no more flaws and deficiencies, and everything will be rectified.
Thus in time to come even the nations of the world will be rectified. The Bible explicitly states loud and clear: “On that day, Israel will be the third with Egypt and with Assyria, a blessing in the midst of the earth” (Isaiah 19:24). “For then I will turn to the peoples a pure language...” (Zephaniah 3:9). Even the animals will be rectified: “And the wolf will dwell with the lamb…” (Isaiah 11:6).
“They will not do evil and they will not destroy...” (ibid. v. 9). As for death: “He will consume death for ever” (ibid. 25:8). As for impurity: “I will remove the spirit of impurity from the earth” (Zechariah 13:2). As for the evil inclination: “And I will remove the heart of stone from your flesh” (Ezekiel 36:26).