In the prophecies of Revelation we find out that the final trumpet is the last in a sequence of 7 trumpets. These 7 trumpets begin to blow in succession with the opening of the 7th seal Revelation 8:1-2.
We also learn from the prophecies of Revelation that the last 3 of these 7 trumpets form a grouping, or a subset of the 7 trumpets... referred to as "the three woes" Revelation 8:13.
This message will review the final blast of the 7th trumpet as part of this final grouping of three trumpet blasts. In other words, trumpets 5, 6, and 7.