A. Lukyn Williams (1853–1943) presents here a wide range of examples of Christian apologetic writings about Judaism. Taking material from the earliest years of the Christian Church until the Renaissance, the book investigates sources with Syriac, Greek, Spanish, and Latin origins. It includes observations on lost or possible books such as the first 'Book of Testimonies' posited by J. Rendel Harris (with whom Williams did not fully agree) which pre-dated the Biblical Gospels; incomplete early treatises; and scriptural extracts. Concerned more with historical detail than with exegesis, Williams' study provides extensive scholarly commentaries on all the texts included and covers possible dates of origin, sources, intended audience, and biographical information about the authors. First published in 1935 with the aim of offering source material in an area often neglected by scholars, the book remains a useful resource for students and scholars of Christian–Jewish relations.