Numbers 10:3-5

New King James Version

³ When ^(A)they blow both of them, all the congregation shall gather before you at the door of the tabernacle of meeting. ⁴ But if they blow only one, then the leaders, the ^(B)heads of the divisions of Israel, shall gather to you. ⁵ When you sound the ^(C)advance, ^(D)the camps that lie on the east side shall then begin their journey.