Berechiah and Elkanah were to be guardians of the ark.

1 Samuel 3:15
Samuel lay down until the morning; then he opened the doors of the house of the LORD. He was afraid to tell Eli the vision,

2 Kings 7:10
So they went and called out to the gatekeepers of the city, saying, "We went to the Aramean camp and no one was there--not a trace--only tethered horses and donkeys, and the tents were intact."

1 Chronicles 15:22
Chenaniah the head Levite was the director of the music because he was highly skilled.

1 Chronicles 15:24
Shebaniah, Joshaphat, Nethanel, Amasai, Zechariah, Benaiah, and Eliezer--the priests--were to blow the trumpets before the ark of God. Obed-edom and Jehiah were also to be guardians of the ark.

And Berechiah and Elkanah were doorkeepers for the ark.