In Luke 12, Jesus taught the disciples how to overcome fear. In teaching them He addressed the basic symptoms of fear, such as worries and anxiety arising from our need for food, clothing and shelter. These needs were identified by Abraham Maslow in his 1943 paper “A Theory of Human Motivation” in Psychology Review, as our physiological needs.
Why does Jesus address these needs? These are our basic needs. Our need to satisfy the physical needs of the flesh. Many of our fears are borne from this desire. By addressing them He cuts to the chase and gets to the primary source of our fear. So that it is uprooted from our lives.