A Psalm of David. The LORD is my shepherd; I shall not want. KJV
David is a man of God specifically speaking a man according to God's heart. David has lot of experience from his profession of herding the sheep's.he had a good sense of love of God which we sometimes don't have.He believed that God works like a shepherd .A shepherd would always take care of his sheep's but how?
Shepherds needs to be patient,kind and devoted to the sheep.shepherds need to be patient because sheep's tend to get lost from their home if not properly overseen.They wander here and there following different signs and sheeps and finally get lost.shepherds staff is the identity that helps sheep's to go on right path.we as a sheep follow groups thinking that the group is the truth but this is the situation where Christ plays the role of saving the sheep by coming to this Earth and saving the sheeps (mankind).This search is done by a shepherd which we refer to as Jesus .
Shepherds take the sheep for grazing which has two reasons 1. To create a habbit of enjoying the nature by doing some walking exercise 2. To feed. This shepherd cares about the health of sheep by doing the above things which could have been replaced by providing a readymade food right at the shelters of sheep but because he cares he takes them out to graze and maintain a good health.God does the same for us.
Shepherds correct the path of sheep by their rods.sheeps sometimes go near wild plants to get feeded which the shepherds know and recognize it as harmful so he corrects them with a rod.psalms 23 is a wide picture of David's shepherd i.e the Lord God.
Christ is our good shepherd.He provides and protects us so we lack no good thing.Amen