Reply To: "Baruch ata Hashem? – How can we bestow blessings on Hashem?

The word borchu is loshon tzivui. He is instructing the listeners to “bless” Hashem. Since “blessing” Hashem means to recognize and declare that He is the source of all blessing, it follows that “borchu” means that.

(Perhaps I should have written that the translation is to “declare” (rather than use the word “recognize”) Hashem as the source of all blessing