Shebaniah, Joshaphat, Nethanel, Amasai, Zechariah, Benaiah, and Eliezer the priests were to blow the trumpets before the ark of God. And Obed-edom and Jehiah (Jeiel) were also gatekeepers for the ark.
And Moses sent them to the war, 1,000 from each tribe, together with Phinehas son of Eleazar, the priest, with the [sacred] vessels of the sanctuary and the trumpets to blow the alarm in his hand.