[Avodah] Just One HaShem in Heaven

[Moshe Y. Gluck]

R' ZS:
"Boruch Hashem Le`olom", which Nusach Ashkenaz and "Sefard" (in chu"l)
say every weeknight, includes "Elokeinu shebashomayim".  The discussion
here has not been about "whether" but about "why".
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Another Mekor is in Berachos 48a: [Amar L'hu Rabbah] V'Rachmana Heicha
Yasiv, Rava Achvi L'shmei T'lala, Abaya Nafak L'vra Achvi Klapei Shmaya.

KT,
MYG