Psalms 148:2 Kabbalah

הַֽלְל֥וּהוּ כָל־מַלְאָכָ֑יו הַֽ֝לְל֗וּהוּ כָּל־צבאו [צְבָאָֽיו׃]

Praise ye Him, all His angels; Praise ye Him, all His hosts.

Read kabbalistic (mystical) interpretation of Psalms 148:2: and classical mystical sources.