Baal HaSulam, “The Arvut (Mutual Guarantee)” Item 17: When the sons of Israel came out of Egypt and became a nation of their own all their needs were provided for by themselves, without dependence on others. This qualified them to receive the above Arvut, and then they were given the Torah.
By uniting among ourselves and building a mechanism of general interconnection out of many people, we create a perfect, whole system. We don’t need anyone in this mutual connection: Everything happens internally, among us.
So, these particular conditions were created in those times, and the external environment didn’t influence the sons of Israel. Thus, they became a nation that exists in a state of interconnection and attributes itself to the upper force.
In that case, the nations of the world cannot hurt the nation of Israel in any way. It is because it is on a different level, lives in a different range of frequencies, and simply doesn’t intersect with or touch others.
From the 4th part of the Daily Kabbalah Lesson 5/1/13, Writings of Baal HaSulam “The Mutual Guarantee”