Numbers 10:2-4

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