Numbers 10:4

4 And if they shall sound with one, all the rulers even the princes of Israel shall come to thee.

Numbers 10:4 Meaning and Commentary

Numbers 10:4

And if they blow [but] with one [trumpet]
With only one of them, or but once, with one sounding, and that an even one as before:

then the princes, [which are] the heads of the thousands of Israel,
shall gather themselves unto thee:
and they only or alone, as Aben Ezra: by this token, or by this difference of blowing both trumpets, or only one, it was, easily known when the whole congregation or when the princes only were to meet Moses at the same place, the door of the tabernacle of the congregation; and all are to attend divine service, and the ministry of the word, even the whole church of God, and all the members of it, high and low, rich and poor, princes and people.

Numbers 10:4 In-Context

2 Make to thyself two silver trumpets: thou shalt make them of beaten work; and they shall be to thee for the purpose of calling the assembly, and of removing the camps.
3 And thou shalt sound with them, and all the congregation shall be gathered to the door of the tabernacle of witness.
4 And if they shall sound with one, all the rulers even the princes of Israel shall come to thee.
5 And ye shall sound an alarm, and the camps pitched eastward shall begin to move.
6 And ye shall sound a second alarm, and the camps pitched southward shall move; and ye shall sound a third alarm, and the camps pitched westward shall move forward; and ye shall sound a fourth alarm, and they that encamp toward the north shall move forward: they shall sound an alarm at their departure.

The Brenton translation of the Septuagint is in the public domain.