Main idea contained in Psalm 23 pertains to God’s provision, protection, and preservation of the humankind. It emphasizes how God provides for the human in terms of the physical and spiritual needs. It stresses that God protects His people even when they travel in the presence of their enemies. It demonstrates God’s wonderful care and provision, fulfilled for us in Jesus Christ, the Good Shepherd. As God was David’s shepherd in the Old Testament, He is ours today through Jesus Christ. What a glorious walk of faith is ours, as we learn to hear the Shepherd’s voice and follow Him. I shall not want, speaking to our desires. It’s saying not only can God take care of my physical needs, but that He can also fulfill me. He can satisfy my heart. The word “want” in today’s text means to lack, decrease, empty, or run dry. So, when David says “I shall not want” he’s saying two things:
(1) Physical needs
(2) Spiritual needs

It reads in Psalm 23
“A psalm of David.”
The Lord is my shepherd, I lack nothing. He makes me lie down in green pastures, he leads me beside quiet waters, he refreshes my soul. He guides me along the right paths for his name’s sake. Even though I walk through the darkest valley. I will fear no evil, for you are with me; your rod and your staff, they comfort me. You prepare a table before me in the presence of my enemies.You anoint my head with oil; my cup overflows. Surely your goodness and love will follow me all the days of my life, and I will dwell in the house of the Lord forever.
{One of the greatest lessons we learn from Psalm 23 is that every person who belongs to God’s flock (by trusting in Jesus Christ as Lord and Savior) is individually cared for as one of God’s sheep.}