And when they are but ‘eggs’, for they do not have the wings of positive commandments, with which to fly, it is stated of Her: (Deut. 22:6)... do not take the mother upon the children. If so, what is the meaning of when a nest will happen to be...? But when the Shekhinah has no ‘place’, in which to reside there permanently, She goes about by happenstance. And this is:xviiiBT Berakhot 6b ‘Anyone who sets a permanent place for his prayer... etc.’
As souls act, so does the Shekhinah abide with them: a soul which is habitual in prayer or in Torah, is a permanent place for the Shekhinah to abide therein. But a soul which is not habitual in prayer or in Torah, unless encountered through happenstance, so, She also, abides upon it through happenstance.