Numbers 10:2-4

Webster_Strongs(i)
  2 H6213 [H8798] Make H8147 thee two H2689 trumpets H3701 of silver H4749 ; of a whole piece H6213 [H8799] shalt thou make H1961 [H8804] them: that thou mayest use H4744 them for the calling H5712 of the assembly H4550 , and for the journeying H4264 of the camps.
  3 H8628 [H8804] And when they shall blow H2004 with them H5712 , all the assembly H3259 [H8738] shall assemble H6607 themselves to thee at the door H168 of the tabernacle H4150 of the congregation.
  4 H8628 [H8799] And if they blow H259 but with one H5387 trumpet, then the princes H7218 , who are heads H505 of the thousands H3478 of Israel H3259 [H8738] , shall assemble themselves to thee.