Numbers 8:26

只要在会幕里，和他们的弟兄一同伺候，谨守所吩咐的，不再办事了。至于所吩咐利未人的，你要这样向他们行。」

zhī yào zài huì mù lǐ ， hé tā men de dì xiong yì tóng cì hou ， jǐn shǒu suǒ fēn fù de ， bú zài bàn shì le 。 zhì yú suǒ fēn fù lì wèi rén de ， nǐ yào zhè yàng xiàng tā men xíng 。」

but shall assist their brothers in the Tent of Meeting, to perform the duty, and shall perform no service. This is how you shall have the Levites do their duties.”