Musar su Giobbe 12:30

What cause does one have for pride? Perhaps his wealth? "The Lord impoverishes and enriches" (I Samuel 2:7). Perhaps his honor? It belongs to God, as it is written (I Chronicles 29:12), "Wealth and honor come from You." So how could one adorn himself with G-d's honor? And one who prides himself in his wisdom surely knows that God "takes away the speech of assured men and reasoning from the sages" (Job 12:20). Thus, all are equal before God, since with His anger He lowers the proud and when He wishes He raises the low. So humble yourself and G-d will raise you up!

As to the fourth comment in the Yalkut by Rabbi Nachman, that as long as the light of the "senior" (Esau) shines the light of the "junior" (Jacob) cannot be widely noticed, we can understand this better if we remember that the secrets of the Torah will be revealed with the help of the light which G–d concealed after the sin of Adam. The Zohar explains that there are two kinds of darkness. One is regular, an absence of light. The other results from an excess of light, i.e. a blinding light. The righteous Gentiles who will benefit from light, will only benefit from the kind of light which does not originate in darkness, and which is subject to being extinguished. The light they benefit from is not of an eternal nature. The moon, on the other hand, shines, although it itself is dark. This very phenomenon alludes to the fact that in the future the moon's light will originate in darkness. It will be an extremely powerful light. May it be G–d's will that we shall soon experience this light.