The paper discusses a miniature of the four evangelist symbols inserted in manuscript MS 140 (olim 43), currently in Cracow Cathedral Library. The design and positioning of the miniature are related to the accompanying commentary texts within the manuscript. Particular attention is paid to the quaternity themes present in the Catechesis Cracoviensis as well as to the text on the four evangelists and Arnobius' commentary on Matthew and John. The discussion demonstrates the underlying Insular background of the miniature and the Hiberno-Latin connections of the texts in MS 140.