Language is an interesting tool that we often use in unexpected ways. For instance, we can refer to one and the same event in both a present and a future sense. We might say something like, we are having a meeting on Monday, or the plane is leaving tomorrow afternoon. In both cases, the reference has a present and a future sense. We are having a meeting and the plane is leaving both refer to the present, but both events will occur in the future. This might be an odd way of speaking, and yet, few would have trouble understanding what we mean.
The descriptions of the Kingdom of God found in scripture often have this same present and future reference. In a present sense, scripture often portrays the kingdom of God as a current orientation or mindset with respect to our way of living in the here and now. In a future sense, scripture often focuses on the kingdom as a state of being to be realized in its fullest sense at an unknown future date and time.
Jesus uses exactly this kind of language in describing the kingdom of God. At the beginning of his public ministry after his sojourn in the desert, for example, Jesus announces to those gathered in the temple that “now is the time of fulfillment. The kingdom of God is at hand. Repent and believe in the gospel” (Mk 1:15). This way of speaking has both a present and a future sense. Jesus comes in the here and now as Messiah and Savior to bring about the kingdom it its fullest sense. Asking us to repent and believe is an invitation to collaborate with him in bringing about that future reality by aligning our values with the values of God.
St. Paul picks up on this way of referring to the kingdom in many of his letters. In his letter to the Romans, for example, he relies on the present sense of the kingdom to claim that the “kingdom of God is not a matter of food and drink,” but rather a way of living born of “righteousness, peace, and joy in the holy Spirit.” For Paul, whoever serves Christ in this way is pleasing to God. For that reason, he encourages his readers to “pursue what leads to peace and to building up one another” (Rm 14:17-19).
On the other hand, Paul appeals to the future aspect of the kingdom in his first letter to the Corinthians. In that letter, Paul claims there will come a time when Christ will hand over the kingdom to his God and Father. This will occur after Christ has destroyed every sovereignty, authority, and power, the last of which to be destroyed is death itself. Then, all those who belong to Christ will be united as one, with our heavenly Father as the center and supreme being of all reality (1 Cor 15:24-28).
Jesus conveys all of these ideas in a series of parables on the kingdom. The three parables in today’s gospel are part of that series. The symbolism in these parables reveals the kingdom as a kind of flourishment in the way we live. That way of life begins in the present, evolves over time, and matures in its fullest sense at a future date and time uncertain. Jesus never reveals what the kingdom will look like in its fullest sense. He merely affirms that the outcome is assured.
These three parables show that the successful conclusion of the kingdom will be immeasurably larger than its humble beginning suggests—seed that yields an abundant harvest; the smallest seed that becomes the largest plant; leavening that produces a whole batch of dough. Jesus comes as the Word of God to initiate this process of fulfillment, despite those who oppose his mission—the weeds among the wheat (Jn 6:68). In the words of Isaiah, “So shall my word be that goes forth from my mouth; it shall not return to me empty, but shall do what pleases me, achieving the end for which I sent it” (Is 55:11).
Although Jesus invites all to participate in the kingdom, deciding who is worthy in that regard is for God alone to determine. This is why the householder in the parable does not allow his fieldhands to separate the weeds from the wheat. Instead, he allows the weeds and wheat to grow alongside one another until harvest. This serves as a warning to the disciples not to preempt the final judgment of God. The harvesting will be done by his angels (Mt 13:26-30; 41). In other words, excluding people from the kingdom is a judgment reserved to God alone, and not to the disciples and not to us. “God alone determines who does, and who does not belong in the kingdom” (cf. commentary on Mt 13).
Until then, bringing about the kingdom in its fullest sense calls for patience, perseverance, and careful nurturing, as all farmers know (Mk 4:26-32). To make that happen, Jesus invites us to continue his work of making God fully present in the here and now by imitating his good works grounded in his values (Jn 14:15). Jesus expresses this counsel perhaps most clearly in his Sermon on the Mount where he reveals his core values of mercy and love for others (Mt 5:3-11).
Key to this process is our belief in Jesus and living by his values. Jesus is not looking for grandiose effort on our part. For, he tells us that God desires mercy, not sacrifice (Hos 6:6; Mt 12:7). Not all of us are called to do the work of Mother Teresa. For most of us, our contribution in bringing about the kingdom comes in very ordinary ways. Jesus provides the example with his own life, the majority of which he lived in an ordinary way. His example gives us the confidence to follow him. "I am the vine, you are the branches,” he tells us. “Whoever remains in me and I in him will bear much fruit” (Jn 15:4-10).
We therefore follow his example whenever we provide a helping hand, a kind word, a compassionate response, a decision to forgive, a desire to love others. We imitate Christ each time we renew our commitment to be just and good to others, especially the poor and vulnerable members of society. Today’s reading from the Book of Wisdom suggests that the kingdom of heaven comes about in exactly this way—"You taught your people by these deeds, that those who are righteous must be kind” (Wis 12:19).
Our part in bringing about the kingdom of God therefore begins when we allow the Holy Spirit to change our hearts and direct our lives (Jn 15:4-10). The Holy Spirit shows us how and when to be just, how and when to be merciful and kind, how to love, how to bring Christ to others. His grace and inspiration are the spiritual yeast acting in our hearts that will eventually leaven the whole human community into the Kingdom of God. Now is the time.