'Wait' in the Bible

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.

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:

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,