Our Lord Jesus takes care of us and provides all that we need. In fact, He is the best or the ultimate provider and leads/guides us (when we allow Him to). It is the Lord, who feeds us. He is responsible for our well-being. The Lord is the one who keeps and guards us. As a result of His care, we have all we need. So we can say, “I shall not want” or “I am not in need of anything.”