Have you ever had your heart leap and your stomach sink when you thought about the future and it occurred to you that you have no idea how to proceed with what little resources you have? That sinking feeling is anxiety. Often the next beat is our inventive ability to figure out how to proceed with our resources - the things we can see, have at our disposal, and seem to have control over. And that works... until it doesn't. What if our souls could be anchored in something so true, so real, and so powerful that we could restfully walk in God's ways into the future, trusting Him to provide based on what He has already provided in full? That is the point of the story of Genesis 15.