God's supreme sovereignty requires a befitting holiness of life and heart in His worshippers; a sentiment sublimely illustrated by describing His entrance into the sanctuary, by the symbol of His worship--the ark, as requiring the most profound homage to the glory of His Majesty. (Psa 24:1-10)
fulness--everything.
world--the habitable globe, with
they that dwell--forming a parallel expression to the first clause.