In describing the Lord as a shepherd, David wrote out of his own experience because he had spent his early years caring for sheep (1 Samuel 16:10, 11). Sheep are completely dependent on the shepherd for provision, guidance, and protection. The New Testament calls Jesus the good shepherd (John 10:11); the great Shepherd (Hebrews 13:20); and the head Shepherd (1 Peter 5:4). As the Lord is the good shepherd, so we are his sheep—not frightened, passive animals, but obedient followers, wise enough to follow one who will lead us in the right places and in right ways.
(Source: Life Application Bible)
1 A psalm of David. The LORD is my shepherd, I shall not be in want.
2 He makes me lie down in green pastures, he leads me beside quiet waters,
3 he restores my soul. He guides me in paths of righteousness for his name’s sake.
4 Even though I walk through the valley of the shadow of death, I will fear no evil, for you are with me; your rod and your staff, they comfort me.
5 You prepare a table before me in the presence of my enemies. You anoint my head with oil; my cup overflows.
6 Surely goodness and love will follow me all the days of my life, and I will dwell in the house of the LORD forever.