Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
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Revelation 8:13

I saw, and I heard an eagle, flying in mid heaven, saying with a loud voice, “Woe! Woe! Woe to those who dwell on the earth, because of the other blasts of the trumpets of the three angels, who are yet to sound!”

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