Why does David call on heavenly beings and those who are silent to praise?

St. Jacob of Sarug says,

“David who became the songbird of melodious psalms awakens created beings every day to praise.

He stands in the midst, between the earthly and the heavenly, as a conductor standing between two choirs …

All these matters of which he spoke are exalted

and he said them for your sake, that you may praise with discernment.

Like a wise man, he awakens the watchful to praise,

he awakens humanity from their slumber …

Because [the creation] was created in all its variety to serve You, so we are obligated to offer praise as our service.”⁶⁰⁴