The second caution is that the ultimate source of sustainable life is not ours to control. It is God through Christ who sustains life. Psalm 104 reminds us of God's active role in making springs, giving drink, causing grass to grow, and “bringing forth food from the earth: wine that gladdens the heart of man, oil to make his face shine, and bread that sustains his heart” (Ps 104:14-16). Most communities are already sustainable in some manner because God has been and is at work through them.
