After the prophets brought down this revelation of Hashem, then they were able to rebuke the Jewish people using this Name, for, the actual Words of Hashem that come into the prophet’s mouth – that he says over in admonition of the Jewish people – derive from this level of Hashem’s Light as it is invested in the Keilim of Beriah (or Yetzira etc.), therefore, it is not at all like a regular human being, which would be the rebuke of a created being, rather it is a rebuke from the Creator Himself.
The power to accomplish this revelation – that the Infinite Light of Hashem should be expressed in BY”A as it is in Atzilus – the prophets received this abilty from the transcendent Light of Hashem known as the “Igul-Circle” of Light that “Sovev Kol Almin-Encompasses all Worlds” equally, that is above and beyond the level of the World of Atzilus, since, on that level, dark and light are equal and the great and small are equal. I.e., relative to that level, Atzilus and BY”A are in the same category, and therefore Hashem’s Light shining in Atzilus can equally likely shine in BY”A.
It is specifically from Him as He is found in that transcendent and encompassing aspect of Elokus that He is able to lower Himself, as it were (in terms of revelation), all the way down into BY”A, for, relative to Him as He exists at that level, all are equal, And as it is written (Devarim 33:27), “under Hashem’s ‘arms’ the world is held in place.” (See Targum Yonasan ben Uziel on this verse.) In other words, Hashem encompasses the entire world with His ‘arms,’ meaning His might, so for Hashem there is no difference between the ‘top of the world’ or the ‘bottom of the world,’ also in the spiritual sense.
This also explains what is written regarding the prophetic prayer of Chanah (Shmuel I, 1:10-11) that first she prayed “ע לַׁה'-to Hashem as He is above and beyond the Name הוי' of Atzilus,” and only after did she say “הֲוָּיָּ''ה צְּבָּאוֹּת-Hashem, who is the Master of the Multitudes,” For, in order to draw down the revelation of הֲוָּיָּ''ה from Atzilus into צְּבָּאוֹּת of BY”A, she first needed to draw down from a level that is “ע לַׁהֲוָּיָּ''ה-meaning, above and beyond the Name הֲוָּיָּ''ה,” i.e., from the His Encompassing Light that transcends Atzilus.
