ISB ~ Revelation 11 v19

ark of his covenant:The throne of God in the heavenly temple. From its base issue divine judgments symbolized by violent thunderstorms and earthquakes (4:5; 16:17-18).

• John sees the heavenly counterpart to the ancient ark where Yahweh sat invisibly enthroned in the sanctuaries of Israel (2 Sam 6:2; Is 37:16).