Hello, John and Doves,A sheep does not need to get cozy with trenches in order to learn to avoid them.No!!! No!!! A thousand times, no!!! When a lamb strays too often, the shepherd will break one of its legs, so that it must stay close to the shepherd's bosom. Because its leg is broken, it cannot walk anywhere. It must be carried. As the shepherd talks to the other sheep, the lamb with the broken leg cannot help but get used to the exact sound of its master's voice. When its leg is healed, it will follow no other. http://www.zondervan.com/Cultures/en-US/Product/ProductDetail.htm?ProdID=com.zondervan.9780310274421&QueryStringSite=ZondervanBaruch HaShem Yeshua Ha Mashiach,Mike C.