Psalm 23 is a poem that uses the image of God as a shepherd. David, who penned this psalm, had been a shepherd himself and understood the parallel between the task of a shepherd caring for his sheep and of God caring for His people. Sheep are totally dependent on the shepherd for food, water, leadership, and guidance as they move from place to place, just as we are dependent upon God for all that we need. Sheep depend on the shepherd for protection from a wide range of predators and dangers, just as we look to God as our Protector and Defender. In the New Testament, Jesus reveals Himself to be the Good Shepherd of His people (John 10:11, 14), fulfilling the Old Testament prophecy that God would come to shepherd His people (Ezekiel 34:7–16, 23).
“Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me..” Psalm 23:4
David bases this description on the practices of shepherds in his day. Shepherds of the time commonly carried a rod and staff as essential to their work.
The rod mentioned in Psalm 23 is a symbol of the Lord’s strength and protection. The rod was a sturdy wooden stick used as a weapon to fight off wild animals who might have hoped to make an easy meal out of an otherwise defenseless flock of sheep. The shepherd also used the rod to help him keep count of the sheep within the flock (as alluded to in Leviticus 27:32). David recounted an incident to King Saul in which he used his shepherd’s rod: “And David said unto Saul, Thy servant kept his father's sheep, and there came a lion, and a bear, and took a lamb out of the flock: And I went out after him, and smote him, and delivered it out of his mouth: and when he arose against me, I caught him by his beard, and smote him, and slew him.” 1 Samuel 17:34–35
The staff mentioned in Psalm 23 is a symbol of the Lord’s guidance and lovingkindness. The staff was a long, slender stick, often hooked at the tip, used primarily to direct the flock. Sheep are notorious wanderers, and once away from the shepherd’s watchful eye, they get into all sorts of trouble (Matthew 18:12–14). The shepherd used his staff to keep his sheep out of danger and close to himself. If a sheep became trapped in a precarious position, the shepherd would loop the curved end of the staff around the neck of the sheep and retrieve it back to safety.
In a sense, the staff, more than any other item of his personal equipment, identifies the shepherd as a shepherd. No one in any other profession carries a shepherd’s staff. It is uniquely an instrument used for the care and management of sheep—and only sheep. It will not do for cattle, horses or hogs. It is designed, shaped and adapted especially to the needs of sheep.
Together, the rod and staff of Psalm 23 paint a picture of the divine Shepherd who wields them. He is strong, competent, and trustworthy; He is present with His sheep, able to defend them and watching over them through all the dangers they face. In this regard, the Shepard of man (sheep) is Jesus the Christ.