Published discussions of academic plagiarism in theology are uncommon but nevertheless necessary. This article defends the importance of post-publication peer review of prior scholarship in theology as an essential practice for maintaining the reliability of the body of published research literature. Open conversations about violations of research and publication ethics support a culture of scholarly integrity. Two articles published by one prolific 20th-century researcher provide distinctive and instructive case studies. Those two continue to be cited as original contributions to scholarship, even though they consist of sentences and paragraphs copied without clear attribution from a variety of earlier authors. Without post-publication peer review, yesterday’s plagiarism will affect the scholarship of tomorrow.