'Service Of The Lord' in the Bible

and Aaron shall offer the Levites before the LORD for a wave offering, on the behalf of the children of Israel, that it may be theirs to do the service of the LORD.

but it will be a witness between us and you, and between our generations after us, that we may perform the service of the LORD before him with our burnt offerings, with our sacrifices, and with our peace offerings;' that your children may not tell our children in time to come, 'You have no portion in the LORD.'

Hezekiah spoke comfortably to all the Levites who had good understanding in the service of the LORD. So they ate throughout the feast for the seven days, offering sacrifices of peace offerings, and making confession to the LORD, the God of their fathers.

So all the service of the LORD was prepared the same day, to keep the Passover, and to offer burnt offerings on the altar of the LORD, according to the commandment of king Josiah.