Numbers 10:2-4

ASV_Strongs(i)
  2 H6213 Make H8147 thee two H2689 trumpets H3701 of silver; H4749 of beaten work H6213 shalt thou make H1961 them: and thou shalt use H4744 them for the calling H5712 of the congregation, H4550 and for the journeying H4264 of the camps.
  3 H8628 And when they shall blow H2004 them, H5712 all the congregation H3259 shall gather H6607 themselves unto thee at the door H168 of the tent H4150 of meeting.
  4 H8628 And if they blow H259 but one, H5387 then the princes, H7218 the heads H505 of the thousands H3478 of Israel, H3259 shall gather themselves unto thee.