How Lutherans should (and shouldn't) use the church fathers. Presented at the ETS Annual Meeting, 2008.
Friendship, fellowship and church politics in the Athanasian controversy. ETS Patristics Study Group, 2004.
Church and state from Constantine onward. Martin Luther College symposium, 1999.
The authenticity of Jerome's Letter 19. Expanded from the International Patristics Conference, Oxford, 1999.
What the early church taught and practiced about abortion and infanticide. Lutherans for Life presentation, 1994.
Forged papal letters and their path into medieval canon law. Columbia Medieval Guild (1991), NAPS (1996).
The house church in Paul's letters and what it meant. Presented at the ETS Annual Meeting, 2015.
Greco-Roman benefaction and the language Paul uses for Christian giving. Presented at the ETS Annual Meeting, 1995.
History of Troas, a city on Paul's journeys. Presented at the SBL Annual Meeting, 1990.
Review article on Sanders, Meier and Crossan and the modern quest for the historical Jesus. Wisconsin Lutheran Quarterly.
