The emphasis in the parable is on the mustard seed, which seemingly has the power to grow on its own. In this it is like the Kingdom of God. While on earth, Jesus planted the seeds of the kingdom by his life, miracles, teaching, and suffering. However, the kingdom is not yet fully established. Although already present in Jesus and his group of twelve, it has yet to come to fruition; just as the seed in the parable needs time to grow, so does God’s kingdom.
The second parable focuses on the tiny mustard seed. Though not the smallest of all seeds, it is most likely the smallest that a first-century farmer in Jesus’ part of the world would have sown. Small as the mustard seed is, it develops into a tree. Though the mustard tree generally averages only nine to twelve feet in height, it has a wide expanse and provides a nesting place for birds. Just as the tree welcomes the birds, so is God’s kingdom welcoming and open to many. These parables help us discern something about the kingdom of God and our own faith. Today, the Kingdom of God is present in the Church. The mission of proclaiming the Good News of the Kingdom given to the Apostles is now given to us. But just as seeds need time to come to fruition, so does the Kingdom of God. That is why in the Lord’s Prayer, we pray, “thy kingdom come.” We know that it will come in its fullness at the end of time. All we need is faith.
-Loyola Press