Verses 1–10
NUMBERS-CHAPTER TEN
Verses 1-10:
The text defines the occasions for blowing the trumpets. This is not the same as that recorded in Le 25:9, where the instruments were of different shape, material, and purpose.
"Trumpet," chatsotserah, a long, straight, narrow instrument with an expanded bell or "mouth." In this text, each trumpet was made of a single piece of silver, beaten and shaped into the desired form.
The purpose of sounding these two trumpets:
1. To assemble the whole congregation of Israel before the Tabernacle. Evidently both trumpets were used for this occasion.
2. To assemble the princes only, by the sound of only one trumpet
3. To alert and ready the people for traveling. At the first sound or "alarm," teruah, those camped to the east of the Tabernacle moved out. At the sound of the second, those to the south of the Tabernacle began their march. The text implies, and the Septuagint inserts in verse 6, that those to the west and the north followed in like order.
Different notes or cadences were sounded for each of the different occasions.
The sons of Aaron, the priests, were in charge of sounding the silver trumpets.
Verse 9 provides that use of the trumpets was to be continued after Israel had settled in the Land. Likely, additional instruments were then provided.
The silver trumpets were to be sounded:
(1) To mobilize the military forces in event of enemy attack;
(2) On special national holidays which were also observed with religious services;
(3) At the beginning of each month;
(4) In conjunction With the Burnt Offerings and Peace Offerings, Nu 28:11-23.
"Ye shall be remembered before the Lord your God," implies that one purpose of the blowing of the silver trumpets was to remind God of His covenant, and to invoke His mercy and grace.