The relation between the image and the text in the 15th century is one of the important topical streams of the study of the history of depictions, because the advancement of printing transformed significantly the communicative strategy and way of thinking. The study endeavours to employ these recent approaches for new research and verification of the question of what was on the walls of Bethlehem Chapel. Were they pictures and which pictures? Or were they inscriptions? And what functions could they have had if they had remained unreadable for the absolute majority of the local public? The study also includes research of the nature of the depictions in the Jena Codex, made possible by the issuance of its annotated reproduction (2010). and Milena Bartlová.