Why do Christians believe we need Christ as our shepherd?

In Christianity, Christ is understood as our shepherd who leads and cares for us. Psalm 23 exemplifies this beautifully, stating 'The Lord is my shepherd; I shall not want,' indicating that all our needs—spiritual and otherwise—are met in Him. Believers recognize that, like sheep, we are prone to wander and need the direction of our shepherd. Christ nourishes us with His word and sustains us with His grace. As the keeper of our souls, He provides us with a sense of security and fellowship, ensuring we are never in want of Christ’s love and guidance.