Tent security

1 Chronicles 9:22-27 - Altogether, those chosen to be gatekeepers at the thresholds numbered 212. They were registered by genealogy in their villages. The gatekeepers had been assigned to their positions of trust by David and Samuel the seer. They and their descendants were in charge of guarding the gates of the house of the LORD -the house called the Tent. The gatekeepers were on the four sides: east, west, north and south. Their brothers in their villages had to come from time to time and share their duties for seven-day periods. But the four principal gatekeepers, who were Levites, were entrusted with the responsibility for the rooms and treasuries in the house of God. They would spend the night stationed around the house of God, because they had to guard it; and they had charge of the key for opening it each morning.

I wonder why the gatekeepers (essentially police or security guards) were needed. Had there been one or more instances of robbery at the Tent that led David and Samuel to institute these offices? Or was it purely precautionary? I wonder if any robbery attempts were made while the gatekeepers were on duty. What would anyone really want to steal from the Tent? And why? Were they more afraid of vandalism?