Psa 24:1-10. 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.
fullness - everything.
world - the habitable globe, with
they that dwell - forming a parallel expression to the first clause.