The fruitfulness of the earth is a wonderful thing – to celebrate it as part of our worship of God is to connect with the deep realities that constitute our life. It also generates the kind of thankfulness which energises us to care for the world around us. We are all aware today that the earth is fragile, its ecosystems easily damaged, its fruitfulness easily depleted. The best motivation to care comes not from a sense of threat or duty but out of an experience of joy and wonder and worship. As we appreciate the wonder of the world God has made, we are moved to play our part in caring for it and sustaining it. Harvest thanksgiving might be an old tradition but it is also an urgent contemporary necessity.