Isaías 50:1 Cábala: Shaarei Kedusha & Zohar

Now, the above is as scripture states⁴²Deuteronomy 32:18, “You have caused the Rock that bore you to be removed”. Moreover, it states⁴³Psalms 68:35, “Give strength to G-d”. This is in accordance to the statement⁴⁴Talmud Berachot 17, “Rabbi Yochanan says, ‘Happy is he who toils in Torah and brings satisfaction to the One who formed him.’ – meaning that he does not toil in the Torah in order to receive a reward at all. Rather, his intent is solely to bring satisfaction to the One who formed him, about whom it is written⁴⁵Isaiah 63:9, “In all their suffering, He suffered.” That is, wherever Israel were exiled the Shechinah went with them. She is our Mother, about whom it says⁴⁶Isaiah 50:1, “Thus says HaShem, ‘Where is your Mother’s bill of divorce [as proof] that I banished her? To which of my creditors did I sell you? Truly, you were sold through your sins and through your transgressions she was banished with you.’” [It is, specifically, the Shechinah that] is called “The One Who Formed us”, as in the verse⁴⁷Deuteronomy 32:18, “You have caused the Rock who bore you to be removed.” [The word for rock here is Tzoor (צור), which also means the “source of form”, just as a child is formed in its mother’s womb.] This is why [Rabbi Yochanan said that such a person brings satisfaction “to the One who formed him”, rather than saying “to the Holy One, Blessed is He.”

"And for your transgressions was your mother put away" (Isaiah 50:1). The King, said to Ima: Did I not tell you that he was going to sin? In that instance, he exiled him and his Mother. Therefore, it is written: "A wise son makes a glad father: but a foolish son is the grief of his mother." "A wise son" alludes to man in Atzilut, and "a foolish son" alludes to man in Briyah.