Likutei Moharan 34:9/ליקוטי מוהר"ן ל״ד:ט׳

19. And this is the explanation [of the opening verse]: {“You will be to Me a kingdom of priests and a kadosh (holy) nation. These are the words that you should speak to the Children of Israel.”}

2You will be to Me a kingdom of priests — This is an aspect of holy love, as explained.

3and a KaDOSh nation — That is, KoDeSh, which is an aspect of a nekudah, and vav (O), which is an aspect of heart, as explained.

4How does one come to the aspect of love and the aspect of kodesh vav? By means of:

5These are the words that you should speak to the Children of Israel — For Moshe is the encompassing nekudah of the souls of Israel.

6Everyone first has to receive from the encompassing nekudah. Afterwards, each and every person has to shine the nekudah he has within him <more than his friend>, into his friend. <Then, after that,> he can shine the nekudah he has within him, into himself—i.e., “My mouth utters wisdom”—to the vav, which is, “and the meditations of my heart are understanding.”

7Then, he is called a “ holy nation”—i.e., kodesh vav, with the nekudah illuminating the vav. And as a result, “You will be to Me a kingdom of priests”—i.e., holy love. For when <you> receive from all these nekudot: from within oneself, from the nekudah that each Jew has, and from the encompassing nekudah ….

8For there, together with each of the nekudot, resides holy love, which is called “priest,” as in, “Behold, I am giving him My covenant of peace.” [This is] what is written in Etz Chaim: The light of Chesed remained in Yesod of the World of Atzilut.

9…<as a result, “You will be to Me a kingdom of priests”—i.e., holy love—and the external loves/foreskin of the heart will be eliminated. Rather, there will be kodesh vav, as explained.> {When a person talks to his friend about fear of God, he receives the nekudah in his friend’s heart without a covering. But there are times he receives the nekudah from his friend by means of other things they discuss. For it is occasionally possible to receive light and inspiration to serve God from his friend’s nekudah by means of the everyday conversation one has with him. Then one receives the light of the nekudah by virtue of its being covered. For sometimes the nekudah has to be within a cover, and so it covers itself within these words and he receives from it.}