We are all members of one body. Paul gives us this picture in Romans 12 to change our perspective from an individualistic, independent mindset, to a communal, familial mindset. The gifts we have are not to be used to promote self, distinguish ourselves from others, or lift up our own name, but are stewarded to us for the edification and growth of the body.
The spiritual gift of giving plays a crucial role not only in carrying out the mission of God, but in strengthening and encouraging the other members of the body. How? First by validating all the work, sacrifice, and labor of our missionaries and national partners. Giving to support the teaching, leading, serving, preaching, and acts of mercy of our fellow brothers and sisters on the mission field communicates that all their labors are important and have value. It strengthens their faith and encourages them to persevere in their calling. When they see others laying up their treasures in heaven through their giving, they are more encouraged to do the same through their serving.
But just as important, the act of giving to kingdom endeavors strengthens our own faith. How? Because we see how our contributions directly help, support, and encourage the work God has called us to do. We find joy in our sense of usefulness and purpose. And through our giving we remind ourselves that the treasures of heaven are worth more than purchasing a new car or remodeling or upgrading to a new house; we are reminded that our security lies in the promises of God and not in the money we have in our bank accounts.
The truth is that it is a daily struggle to believe in the gospel and the surpassing value of living for the kingdom. It is much easier to be conformed to the world and its values. But when each member of the body exercises their spiritual gifts for the edification of the saints, then the kingdom of God is present. And when those who labor in teaching, serving, and acts of mercy on the mission field receive gifts from those who labor in giving, they are affirmed in the truth and promises of the gospel. Of course it is their labors that also inspire generous giving. And so we see that when we exercise these spiritual gifts there is back and forth encouragement and upbuilding of the body of Christ and a forward advance of the Great Commission.