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Yet doctrines aren't "dispensable" because they provoke controversy. Consider how the early church debated Christ's identity as true God and true human. Even such a central teaching hasn't been immune to dispute. So when it comes to an issue like the sacraments, silencing voices of conviction is not the way forward. Instead, honest yet charitable discussions about our differences can deepen faith. We should not jettison disputed doctrines just because they can be divisive.

While theological traditions highlight differences among us, they don't have to harden us to one another. And they can give us a wealth of resources from which to grow in our faith and help us face the challenges of today's world.

During the ecumenical meeting I mentioned earlier, a Roman Catholic nun and a Reformed pastor both responded to the evangelicals' lament. They obviously came from divergent traditions, but both knew where to go for worship resources on justice and concern for the poor. The nun spoke about the long Roman Catholic tradition of social teaching emerging from reflection on "natural law" as a provision of God available to all people. This tradition-specific reflection has led to songs, worship, and spirituality in Catholicism that keeps social concerns, such as poverty, at the forefront of obedience to Jesus Christ. The Reformed pastor spoke about how John Calvin wanted almsgiving to be connected to a weekly celebration of the Lord's Supper. That way, sharing in the body and blood of Christ manifested itself not only in mutual love in the church, but also in love for the hungry, the stranger, and the naked (Matt. 25:31-46).

Paradoxically, theological traditions can highlight what we share with other Christians. By articulating our differences, we also discover our commonalities. In some ways, the Roman Catholic nun and the Reformed pastor had more in common with each other than with the generically evangelical pastors on the panel. Both realized that they did not approach Scripture as a blank slate. They needed the interpreters of the past to have a fully orbed scriptural theology. Both realized that God's concern for the poor and the outcast connects to the gospel itself. They disagreed on much, but they both drew from the breadth and depth of tradition to apply scriptural insights to the challenges of the day.

Yet even as tradition helps theology address contemporary issues, it also prevents us from succumbing to "the spirit of the age." Insights from other times, cultures, and places can bolster our fight against superficial belief. C. S. Lewis diagnosed the problem of eschewing tradition as "chronological snobbery," "the uncritical acceptance of the intellectual climate common to our own age." In its place, theological traditions open up the wisdom and possibilities of the "cloud of witnesses." Like us, these witnesses faced dire challenges in trying to teach and live out the gospel in an inhospitable world. Many of their challenges are bound to appear again and again: Is Jesus Christ a prophet (like Muhammad) or the eternal Son of God? What is the relationship between Israel and the church?

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