Cross reference
Numbers 10:3
3 and they have blown with them, and all the company have met together unto thee, unto the opening of the tent of meeting.
Jeremiah 4:5
5 Declare in Judah, and in Jerusalem sound, And say ye, `Blow a trumpet in the land,' Call ye fully, and say ye: `Be gathered, and we go in to the fenced city.'
Joel 2:15-16
15 Blow ye a trumpet in Zion, Sanctify a fast -- proclaim a restraint.
16 Gather the people, sanctify an assembly, Assemble the aged, Gather infants and sucklings of the breasts, Go out let a bridegroom from his inner chamber, And a bride out of her closet.