'Fenced' in the Bible
Now Jericho [a fenced town with high walls] was tightly closed because of the Israelites; no one went out or came in.
And David said to Abishai, Now will Sheba son of Bichri do us more harm than Absalom did. Take your lord's servants and pursue him, lest he get for himself fenced cities and snatch away our very eyes.
You shall smite every fenced city and every choice city, and shall fell every good tree and stop all wells of water and mar every good piece of land with stones.
Call to Me and I will answer you and show you great and mighty things, fenced in and hidden, which you do not know (do not distinguish and recognize, have knowledge of and understand).