It is this that is written: (Is. 50:1)... and through your sins, your mother was sent away. And because of this: (Ex. 20:7) You shall not take the Name of Y”Y ELoQeYKha in vain... What is the Name of Y”Y? It is the Shekhinah.... in vain... – this is ‘idolatry’, to where She is exiled.
And furthermore: She is repentance – the Day of Atonements, comprised of the Ten Days of Repentance, which are Y-H. The Day of Atonements – this is Hei ה (=5), comprised of five prayers, the Ten Days of Repentance – this is Yod י (=10). ‘To receive penitents’cxxiLiturgical: Penitential Prayer this is V-Q. Anyone who returns in repentance, it is as if he returned V-H to be with Y-H.