ISB ~ Revelation 11 v13

earthquake:The murderous city experiences the first tremor of divine judgment.

tenth of the city:The figure of 7,000 casualties, indicative of sevenfold judgment, suggests Jerusalem is still in view. See note on Rev 6:1-8:5.

gave glory:This is the only chastisement in Revelation that leads some to repentance (contrast with 9:20-21 and 16:9, 11).