Read an October 1989 letter to the bishops of the Catholic Church on the subject of Christian meditation written by then-Cardinal Joseph Ratzinger, now Pope Benedict XVI. In it, Ratzinger addresses yoga.

Read an article about the tensions between secular sports clubs and fitness centers that must pay taxes and their church counterparts (and sometimes competitors) that are tax-exempt.

Seyoon Kim is a professor of New Testament at Fuller Theological Seminary in Pasadena, Calif., and has written widely on Paul and “the New Perspective.”

David B. Capes is a professor in the department of Christianity and philosophy at Houston Baptist University. He is a co-author of Rediscovering Paul: An Introduction to His World, Letters and Theology (2007).

The Rev. Thomas H. Tobin is a theology professor at Loyola University in Chicago.  He wrote Paul’s Rhetoric in Its Contexts: The Argument of Romans.

Calvin J. Roetzel is a professor of New Testament and Christian studies in the department of classical and Near Eastern studies at the University of Minnesota in Minneapolis. He is the author of numerous books on Paul and wrote the entry on Paul for the Eerdmans Dictionary of the Bible.

Sheila E. McGinn is a professor of biblical studies and early Christianity in the religious studies department at John Carroll University in University Heights, Ohio. She has written on Paul’s writings and the theology of creation.

James W. Aageson is a professor of religion at Concordia College in Moorhead, Minn. He is the author of Paul, the Pastoral Epistles and the Early Church (2008).

The Rev. Richard B. Hays is a professor of New Testament and biblical studies at Duke University in Durham, N.C. He is the author of The Conversion of the Imagination: Paul as Interpreter of Israel’s Scripture.