Revelation 8:13
And I beheld, and heard an angel flying through the midst of heaven, saying with a loud voice, Woe, woe, woe, to the inhabiters of the earth by reason of the other voices of the trumpet of the three angels, which are yet to sound!
Cross-reference
Revelation 9:1 begins the first woe trumpet, directly fulfilling the eagle's announcement of three woes from Revelation 8:13.
Revelation 9:12 marks the end of the first woe and looks ahead to two more, directly referencing the three woes announced by the eagle.
Revelation 11:14 declares the second woe past and the third coming, continuing the sequence of woes from the eagle's threefold announcement.
Revelation 14:6 features another being flying in midheaven with a loud message to earth dwellers, parallel to the eagle's woe proclamation.
Revelation 19:17 also has birds flying in midheaven and a loud cry, echoing the eagle's midheaven proclamation of woe.
In Revelation 12:12, the same phrase 'woe to the earth' appears, now because of the devil's descent—a direct parallel to this woe.
Revelation 15:1 introduces the seven last plagues, continuing the series of judgments that the three woes here anticipate.