The blessings of the Holy One were not given just to the angels. The angels connect to the Right and Left columns and they need the Israelites to connect to the Central Column.
“וְקָרָא זֶה אֶל זֶה וְאָמַר קָדוֹשׁ קָדוֹשׁ קָדוֹשׁ יְהוָה צְבָאוֹת מְלֹא כָל הָאָרֶץ כְּבוֹדוֹ”
“And one called out to another and said, “Holy, Holy, Holy, is YHVH of hosts, The whole earth is full of His glory.””
This Zohar reveals that the angels can’t say the ‘Kedusha’ (Holy, Holy, Holy) until the Israelites in the world below say it in order to connect to the Central Column.
‘And one called out to another’ is the aspect of the angels from the Right and Left columns facing each other and representing the worlds of Briah (Creation) and Yetzirah (Formation). The souls of the Israelites are from the Central column. They connect to the world of Asiah (Action) and can complete the connection together with the angels above to draw light to the world below.
Daily Zohar # 2785 – Balak – Holy Kedusha