The Zohar connects the Faithful Shepherd, Moses, to the letter Lamed ל. It is the only letter that goes above the top line of the letters and Moses is the one who is above all people. He has the connection to Binah with the name יוד-הי-ואו-הי that has three letters Y י . They have the numerical value of 30, same as for the letter ל , Lamed.
Moses was previously on the level of Zeir Anpin with the name יוד-הא-ואו-הא. This name has one Yי and three א , Alefs with numerical value of 13, same as אחד , ‘One’. 13 is also reference to the 13 attributes of God that is the secret form of Creation that is אדם ‘Man’. Genesis 1:26 “And God said: ‘Let us make man in our image, after our likeness”.
” הֲלוֹא אָב אֶחָד לְכֻלָּנוּ, הֲלוֹא אֵל אֶחָד בְּרָאָנוּ”
“Have we not all one (אֶחָד) father? Hath not one (אֶחָד) God (אֵל) created us”
The Zohar also connects the three Yods ייי from the name of Binah יוד-הי-ואו-הי to the three Yods from the blessings of the priests from Numbers chapter 6
Rabbi Ashlag explains that the blessings connect to the Holy Creatures of the Holy Throne.
Verse 24: ” יְבָרֶכְךָ יְהוָה, וְיִשְׁמְרֶךָ ” “YHVHbless you and keep you” Connects to Lion, Right and the name of Chokmah יוד-הי-ויו-הי numerical value 72=חסד=Chessed
Verse 25: ” יָאֵר יְהוָה פָּנָיו אֵלֶיךָ, וִיחֻנֶּךָּ ” “YHVH make his face shine on you and be gracious to you” Connects to Central column and the name of Zeir Anpin יוד-הא-ואו-הא
Verse 26: “יִשָּׂא יְהוָה פָּנָיו אֵלֶיךָ, וְיָשֵׂם לְךָ שָׁלוֹם ” “YHVH turn his face toward you and give you peace” Connects to Ox, Left the name of Binah יוד-הי-ואו-הי
Verse 27: ” וְשָׂמוּ אֶת-שְׁמִי, עַל-בְּנֵי יִשְׂרָאֵל; וַאֲנִי, אֲבָרְכֵם” “And they will put my name on the Israelites, and I will bless them” Connects to the name of Malchut יוד-הה-וו-הה.