Two trumpets — For Aaron's two sons: though afterwards the number of the trumpets was much increased, as the number of the priests also was. These trumpets were ordained, both for signification of the great duty of ministers, to preach the word; and for use, as here follows.
Related Commentaries of Numbers 10:2
Numbers 10:2
2 Make thee two trumpets of silver; of a whole piece shalt thou make them: that thou mayest use them for the calling of the assembly, and for the journeying of the camps.