Podcast: Maor Vashemesh defines deveykut as access to Mochin Ila'in which is only possible through the attachment of Tefilah. The "residue" that follows when back in the real world ("shearis Mochin") gives him the ability to put into action the product of the inspiration. Punning on the word "beasamecha" as things that are "samui" hidden from view...the thoughts and inner work not open for scrutiny...even when performing mitzvot publically.
