A Shepherds Look at Psalm 23 by Phillip Keller

"It was not the most pleasant procedure to catch each ewe in turn and lay her ear on a wooden block and then notch it deeply with the razor sharp edge of a knife. There was pain for both of us. But from our mutual suffering, an indelible, lifelong mark of ownership was made that could never be erased....There is an exciting parallel to this in the Old Testament." Page 24.

"The strange thing about sheep is that because of their very makeup, it is almost impossible for them to be made to lie down, unless four requirements are met." Page 35.

Keller, Philip. A Shepherds Look at Psalm 23. Zondervan Publishing House: Michigan. 1970. ISBN# 0-310-26797-8