Prepared themselves to sound - Each took up his trumpet, and stood prepared to blow his blast. Wars are here indicated; the trumpet was the emblem of war.
Matthew 26:17 On the first day of the Festival of Unleavened Bread, the disciples came to Jesus and asked, "Where do you want us to make preparations for you to eat the Passover?"Revelation 8:2 And I saw the seven angels who stand before God, and seven trumpets were given to them.
