I’m not sure if you’re a casual observer in this or a fervent religionist (as I am for Torah Judaism) but my comment was that protestants bringing proofs for their beliefs from Kabbalah is tacit acceptance of Jewish Oral Law. So where it suits them, the Oral Law is valid. When it contradicts Christian theology, it’s “...just made up by the rabbis.”
I’m Catholic, actually, who has done some small amount of Talmud study.
My point was that Jews who are into Kabbalah seem to accept that God, while One, also can display different aspects or emanations (Sefirot)
https://www.myjewishlearning.com/article/sefirot/
I was making an analogy:
If it is valid in Judaism to regard God as being One, but having ten emanations, then why is it so hard to reconcile God as being One, with three aspects (the Trinity)?