Translation
Then the seven angels
with the seven trumpets
prepared to sound them.
Paraphrase
Then the full contingency of angels that had everything they needed to deliver a foretaste of what was coming, got ready to do just that.
Then the seven angels
with the seven trumpets
prepared to sound them.
Then the full contingency of angels that had everything they needed to deliver a foretaste of what was coming, got ready to do just that.