As John has already written about the first 6 trumpet blasts, there can only be 1 more trumpet blast to come, which is to herald God's ultimate wrath, by way of the pouring out of the bowls of His wrath, which just happen to be 7 in number.
Rev, 4:5 NASB
And from the throne proceed flashes of lightning and sounds and peals of thunder. And there were seven lamps of fire burning before (God's) throne, which are the seven spirits of God.
Seven angels (spirits in themselves), before God's throne, are utilized to pour out God's seven bowls of wrath upon the earth, while flashes of lightning and sounds and peals of thunder abound, directly from the throne of God Himself.
Ezek, 19:19 NASB
When the sound of the trumpet grew louder and louder, Moses spoke and God answered him with thunder.
If the "7 Thunders" being talked about in Rev, 10:3,4, after the 6th trumpet has already heralded its own cause and effect, are not in reference to the "7 Bowls" of God's wrath, then what could they possibly be in reference to??
