Charles Ellicott Commentary Psalms 2:4

"He that sitteth in the heavens will laugh: The Lord will have them in derision." — Psalms 2:4 (ASV)

He that sitteth. —Here the psalm, with a sublimity truly Hebrew, turns from the wild confusion on earth to the spectacle of God looking down with mingled scorn and wrath on the fruitless attempts of the heathen against His chosen people.

Laugh. —We speak of the “irony of events”; the Hebrew ascribes irony to God, who controls events.