LORD to minister # 13_1CH_23_13 # The sons of Amram; Aaron and Moses: and Aaron was separated, that he should sanctify the most holy things, he and his sons for ever, to burn incense before the LORD, to minister unto him, and to bless in his name for ever. 
LORD to minister # 05_DEU_10_08 # At that time the LORD separated the tribe of Levi, to bear the ark of the covenant of the LORD, to stand before the LORD to minister unto him, and to bless in his name, unto this day. 
LORD to minister # 26_EZE_40_46 # And the chamber whose prospect [is] toward the north [is] for the priests, the keepers of the charge of the altar: these [are] the sons of Zadok among the sons of Levi, which come near to the LORD to minister unto him.