Numbers 32:36

32:36 Beth Nimrah, and Beth Haran as fortified cities, and constructed pens for their flocks.

Numbers 13:19

13:19 and whether the land they live in is good or bad, and whether the cities they inhabit are like camps or fortified cities,

Numbers 32:17

32:17 but we will maintain ourselves in armed readiness and go before the Israelites until whenever we have brought them to their place. Our descendants will be living in fortified towns as a protection against the inhabitants of the land.