en_tn_condensed/rev/15/01.md

great and marvelous

"something that greatly amazed me"

seven angels with seven plagues

"seven angels who had authority to send seven plagues on the earth"

which are the final plagues

"and after them, there will not be any more plagues"

for with them the wrath of God will be completed

Possible meanings are 1) these plagues will show all of God's anger or 2) after these plagues, God will no longer be angry.