en_tn_condensed/1ch/15/18.md

With them were their kinsmen of second rank

"With them were their kinsmen who were in a lower position of power" or "The following relatives would help them"

Mikneiah, Obed-Edom, and Jeiel, the gatekeepers

The word "gatekeepers" refers to people who guard gates or entryways. Here it refers to guarding access to the ark of the covenant and applies to Obed-Edom and Jeiel. Alternate translation: "Mikneiah, and the gatekeepers, Obed-Edom and Jeiel"