All of the parables about the kingdom of God—the mustard seed, the seed falling on different kinds of ground, the treasure hidden in the field, the leaven in the dough—all show that we are in this together. Fully developed, one seed does not make for a harvest. It takes the whole field of grain. One measure of yeast does not make for a whole loaf of bread. Even the one who finds the hidden treasure must collaborate with others to raise the purchase price—the owner of the field and buyers for his own goods.
In this light, bringing about the kingdom of God takes the combined effort of all of us. No one does it alone. Jesus himself sets the example of the need for collaboration. First, he calls his Apostles, and then he calls Peter to lead his church, the collective body of Christ. The need for collaborators remains today because the kingdom of God planted by the Word of Jesus has not yet reached fruition. It is still in the growing season because God wants a bountiful harvest.
Until the harvest arrives, the garden stands in need of constant care and cultivation. Without proper care, the newly planted garden will fail to flourish and will deteriorate. As followers of Christ, therefore, our calling is to care for the garden. Each of us pulling together will bring about the kingdom of God. As St. Paul reminds us, there are many gifts but one spirit to equip us for the work of building up the body of Christ (Eph 4:12).
As good stewards, we use our gifts in service to one another (1 Pt 4:10). Good works that stem from our faith and love is how we realize the kingdom. Our good works are like the leavening agent that causes the dough to rise. Through good works, we become the farmer tending the growing seed. We tend the kingdom of God by keeping his commandments to love one another as Jesus loved us.
Jesus does not provide specific instructions in this respect, and yet, he calls us to a different way of life, a different way of seeing things. He wants to form a partnership with us and will strengthen us for the task at hand (Phil 4:13). Jesus wants coworkers, who will be salt and light for the world, to bring about his bounty—his peace, justice, love, reconciliation, and respect for the dignity of all, especially for those in our daily lives.
This is the underlying message of all the parables on the kingdom of God. As followers of Christ, we are chosen for a life of good works born of faith and love to bring about a new reality, a new world—the kingdom of God.