In the classroom, Dr. Williams aims to teach. For him, teaching, especially teaching the Bible, is relational and transformational: He imparts himself to the student, and the student is changed in some way (attitudes, values, character, competence, etc.), not just through the impartation of content but through the honest attempt to wrestle with God's Word.

His recent research has focused on the book of the Chronicles, especially its theology and relationship to other biblical literature. His dissertation, supervised by John Sailhamer, explored the vocabulary of Chronicles in relation to Kings. His broader research interests include hermeneutics, Old Testament Theology, and reading the Pentateuch as a whole.