1 Chronicles 15:18

And with them their brethren of the second degree
Who were next unto them, both in office and skill in singing:

the fourteen following, Zechariah, Ben, and Jaaziel, and Shemiramoth,
and Jehiel, and Unni, Eliab, and Benaiah, and Maaseiah, and Mattithiah,
and Elipheleh, and Mikneiah, and Obededom, and Jeiel, the porters;
who, when they were not employed in singing, were doorkeepers of the sanctuary; either they had been porters at the tabernacle in Gibeon, or were so after the ark was placed in the tabernacle David prepared for it.