Charles Ellicott Commentary 1 Chronicles 15:24

"And Shebaniah, and Joshaphat, and Nethanel, and Amasai, and Zechariah, and Benaiah, and Eliezer, the priests, did blow the trumpets before the ark of God: and Obed-edom and Jehiah were doorkeepers for the ark." — 1 Chronicles 15:24 (ASV)

Seven priestly trumpeters.

The priests blew with the trumpets—they were blowing . A pair of silver clarions were blown by the priests for the calling of the assembly, and the journeying of the camps (see also 1 Chronicles 16:6). The seven priests perhaps walked immediately before the Ark, as in Joshua 6:4.

of the Ark,

And Obed-edom and Jehiah were doorkeepers for the ark (compare to 1 Chronicles 15:23). It is hardly likely that these persons were identical with the minstrels Obed-edom and Jeiel of 1 Chronicles 15:18 and 1 Chronicles 15:21, for:

1. 1 Chronicles 15:19–24 appear to describe the order of the procession, according to which two “doorkeepers” walked before and two behind the ark (1 Chronicles 15:23–24), whereas Obed-edom and Jeiel the minstrels walked, playing their lutes, two places before even the first pair of doorkeepers (1 Chronicles 15:21);
2. The name “Jeiel” is different in form and meaning from “Jehiah,” Jah liveth;
3. The recurrence of names has been too frequent to allow us to be much surprised at a second Obed-edom (compare to 1 Chronicles 16:38).