This document discusses focusing one's heart and mind on God rather than worldly concerns like wealth and provisions. It notes that if one's "eye is single" and focused on God, their whole body will be filled with light. However, an evil eye focused on worldly things will lead to darkness. It encourages trusting in God to provide for one's needs, like He provides for the birds, rather than being anxious about life's provisions. It concludes that one cannot serve both God and wealth, so we must decide to serve God alone.