Kabbalah su Salmi 34:2

He opened and said: "I will bless God in every moment" and so on (Psalms 34:2). What did David see that led him to say "I will bless God?" Rather, David saw that God required an invitation, and he said "I will bless." For when a person sits at a table, the Shekhinah is there, and the Other Side is also there. When a person invites others to bless the Holy Blessed One, the Shekhinah takes her place (with this invitation) above to receive the blessings, and the Other Side is subdued. (Alternate version: and if she takes her place above as a result of the blessing, and the Other Side is not included) And if a person does not extend an invitation to bless the Holy One, Blessed be He, the Other Side hears and causes a ruckus so that it may have a share in that blessing.