“such tribulation.” This is the time of “great tribulation” Jesus spoke of in Matthew 24:21. Jesus would have learned a lot about the Tribulation period from the Old Testament. This great tribulation is the subject of much of the Book of Revelation, with its 7 seals, 7 trumpets, 7 thunders, and 7 bowls of judgment. [For more on the prophecies of the Great Tribulation, see commentary on Isa. 13:9].