זוהר, ואתחנן י״גZohar, Vaetchanan 13

Segment 1א׳

(דברים ו׳:ד׳) שְׁמַע יִשְׂרָאֵל יְיָ' אֱלֹהֵינוּ יְיָ' אֶחָד, דָּא אִיהוּ יִחוּדָא חַד. בָּרוּךְ שֵׁם כְּבוֹד מַלְכוּתוֹ לְעוֹלָם וָעֶד, הָא יִחוּדָא אַחֲרָא, לְמֶהֱוִי שְׁמֵיהּ רָזָא חַד. וְרָזָא דָּא, (מלכים א יח) יְיָ' הוּא הָאֱלֹהִים, דָּא כְּתִיב, כַּד אִינּוּן בְּיִחוּדָא חַד.

“Hear, O Israel, the Lord our God, the Lord is one” (Deut. 6, 4): this is one unity. “Blessed be the name of the glory of His kingdom for ever and ever”: here is another unity, so that His Name may be one mystery. And this is the mystery: (I Kings 18) TETRAGRAMMATON is Elohim — this is written when they are in one unity.

Segment 2ב׳

וְאִי תֵּימָא, אִי הָכִי כְּגַוְונָא דִּכְתִּיב, (זכריה יד) יְיָ' אֶחָד וּשְׁמוֹ אֶחָד, (נדפס בתרומה קע"א ע"ב) לָאו אִיהוּ יְיָ' הוּא הָאֱלֹהִים, דְּאִי כְּתִיב יְיָ' וּשְׁמוֹ הוּא אֶחָד, הֲוִינָא אַמְרֵי הָכִי, לָא כְּתִיב אֶלָּא יְיָ' אֶחָד וּשְׁמוֹ אֶחָד, וְאִצְּטְרִיךְ לוֹמַר בְּגַוְונָא דָּא, יְיָ' הוּא הָאֱלֹהִים הוּא, וְיִתְחֲזֵי יְיָ' אֶחָד וּשְׁמוֹ אֶחָד.

And should you say: if so, then in the manner of what is written, “The Lord will be One, and His Name One” (Zech. 14) (printed in Terumah, folio 171b) — is this not TETRAGRAMMATON is Elohim? For had it been written, “The Lord, and His Name is One”, I would have said so. But it is not so written; only, “The Lord is One, and His Name One”. And it is necessary to say it in this manner: TETRAGRAMMATON is He, Elohim is He — and then it is seen as “The Lord is One and His Name One”.

Segment 3ג׳

אֶלָּא כֹּלָּא חַד, דְּכַד אִתְאַחֲדָן תְּרֵין שְׁמָהָן אִלֵּין, דָּא בְּיִחוּדָא חַד, וְדָא בְּיִחוּדָא חַד, כְּדֵין תְּרֵין שְׁמָהָן אִלֵּין אִתְעָבִידוּ חַד, וְאִתְכְּלִילָן דָּא בְּדָא, וַהֲוִי כֹּלָּא שְׁמָא שְׁלִים בְּיִחוּדָא חֲדָא, וּכְדֵין יְיָ' הוּא הָאֱלֹהִים, דְּהָא כְּדֵין אִתְכְּלִיל כֹּלָּא דָּא בְּדָא לְמֶהֱוִי חַד, וְעַד דְּאִתְיַיחֲדוּ כָּל חַד דָּא בִּלְחוֹדוֹי וְדָא בִּלְחוֹדוֹי, לָא אִתְכְּלִילוּ דָּא בְּדָא, לְמֶהֱוִי כֹּלָּא חַד.

But all is one. For when these two Names are unified, this one in a single unity and that one in a single unity, then these two Names are made one and are comprised one within the other, and the whole becomes a complete Name in one unity. And then TETRAGRAMMATON is Elohim, for now all is comprised one within the other, to be one. And so long as each is unified on its own, this one by itself and that one by itself, they are not comprised one within the other so as to be all one.