Psalm 23 is a well-known chapter from the Book of Psalms in the Bible. It is attributed to King David and expresses trust in God as a caring shepherd. The psalm describes how God provides guidance, comfort, and protection, using the imagery of green pastures and still waters to symbolize peace and abundance. The psalm emphasizes the idea of divine presence, stating that even in difficult times, such as walking through the "valley of the shadow of death," believers need not fear because God is with them. It concludes with a promise of goodness and mercy throughout life and eternal dwelling in God's house.