Look at the trees of the forest. See how sturdy and beautiful they are, how tall they grow, and how smooth is their bark. Yet when we plant a garden, we prefer other kinds of trees, such as pomegranate and olive trees. This is because we want trees that bear fruit. We are the trees which God has planted in his garden. He is not concerned at how sturdy and beautiful we are, or how tall we grow, or how smooth our skin is. As trees in his garden, he is concerned only that we bear fruit. And the fruit which he wants us to bear is spiritual: peace and love, faith and gentleness, patience and self-control, generosity and loyalty . . . He has planted us on this earth not for our own sakes, but for his glory; and we can only glorify him by the spiritual fruits that grow in our souls.
St. John Chrysostom