Berean Standard Bible (BSB)
They performed the service of their God and the service of purification, along with the singers and gatekeepers, as David and his son Solomon had prescribed.
World English Bible (WEB)
They performed the duty of their God, and the duty of the purification, and so did the singers and the porters, according to the commandment of David, and of Solomon his son.
Strong's King James
And both the singers{H7891}{(H8789)} and the porters{H7778} kept{H8104}{(H8799)} the ward{H4931} of their God{H430}, and the ward{H4931} of the purification{H2893}, according to the commandment{H4687} of David{H1732}, and of Solomon{H8010} his son{H1121}.
The F.O.G *
They watched over the service of their Elohim, and the service of purification together with the singers, and the gatekeepers by the command of David and his son Shlomo.
The F.O.G Message *
Young's Literal Translation
And the singers and the gatekeepers keep the charge of their God, even the charge of the cleansing—according to the command of David and Solomon his son,