'Guard' in the Bible

Then I will camp around My house [as a guard] because of an army,Because of him who passes by and returns;And no oppressor will again overrun them (Israel),For now My eyes are upon them [providentially protecting them].

In that day the Lord will defend the people of Jerusalem, and the one who is impaired among them in that day [of persecution] will become [strong and noble] like David; and the house of David will be like God, like the Angel of the Lord [who is] before them.