I recently ran across a reference to the angel named "Immanuel" or "Emmanuel" ... it reads: Emmanuel ("God with us")-the angel in the fiery furnace who appeared beside Sidras, Misac, and Abednego. "..." In the cabala, Emmanuel is a sefira of Malkuth (the Kingdom) in the Briatic world. [Rf: Ambelain, La Kabbale Pratiqtre.]
Question 1. What is the Jewish / Torah source for the proposition that this angel is the one that saved Daniel's friends from the furnace?
Question 2: Is Ambelain, La Kabbale Pratique, an accepted Jewish source? if not, is there one that states this proposition stated here?
Note: the story of the three friends of Daniel in the furnace and them being saved by a fourth, who is an Angel is found in Daniel 3. Link: https://www.chabad.org/library/bible_cdo/aid/16486/showrashi/true/jewish/Chapter-3.htm
Who is this angel?