21-Revelation-10:

The seven thunders ( identical with the last woe which is the seventh trumpet / vial ) represent God's direct judgment which will involve fire from heaven to kill the last of mankind and the white-throne judgment where all of the dead will be resurected and found guilty and cast into the lake of fire and no longer exist. Here in chapter 10 a pause in the narative is indicated (10:11) and the revelation will continue to unfold in chapter 15 and 16 with the seven vials which will cover the same period as the trumpets. In chapter 20 the seven thunders are completed (part of which concerns Armageddon when the final 1/3 of mankind are killed...which portion is also covered in the last part of chapter 16 and the last part of chapter 19). Between the straight narative sections are various parenthetical sections concerning the marriage supper, general church age, and the beast and Babylon as we shall see. Note that the trumpets are completed in the last portion of chapter 11 (vs. 14-19).