This is it that belongeth unto the Levites: from twenty and five years old and upward they shall go in to wait upon the service of the tabernacle of the congregation:

And thou shalt appoint Aaron and his sons, and they shall wait on their priest's office: and the stranger that cometh nigh shall be put to death.

But if he thrust him of hatred, or hurl at him by laying of wait, that he die;

But if he thrust him suddenly without enmity, or have cast upon him any thing without laying of wait,

And from the age of fifty years they shall cease waiting upon the service thereof, and shall serve no more: