Gospel: Luke 13: 18-21
Little things become big things. The tiny mustard seed grows to become a large shrub, but to what purpose? To provide a place of sanctuary and nesting for the birds of the air. The minute specks of yeast are kneaded into dough, but to what end? To provide bread that will serve as nourishment and sustenance for people in their hunger. The point of the kingdom of heaven is not merely its growth from something small to big, but the purpose for which the growth exists.
For too long we have seen this image of growth in terms of institutional power, influence, and occupying space on this earth. But the point in being instruments of the kingdom of heaven is to be people who provide a haven, sanctuary, and refuge for others; people who will be ones to nourish and sustain others here on earth in body, mind, and spirit. To grow in faith is to grow in becoming these things for the sake of others.
Growth in faith is not a self-interested enterprise; it does not consist in earning merit or acquiring influence or prestige in the world. It is a life of selfless giving: the mustard seed and yeast die and no longer exist - they pass away in order to become something else, something that will be for the benefit of others in the world. That is the Christian life in its entirety.