Illuminated manuscripts are manuscripts with pictures that, originally, were intended to make the text more understandable. In places where literacy was low, illuminated manuscripts could help non-readers understand the Bible (or other texts) more easily. In later times, illumination came to mean decorated, regardless of whether the decorations were related to the text.
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I've been working on the series What are New Testament Manuscripts?, and my last article, What are Nomina Sacra?, described how names and titles for God were contracted to show a special reverence for them. The other articles in the series were about Biblical Manuscripts, but this one focuses on Christian symbols used by the church, sometimes in copies of the New Testament, but also in commentaries, prayers, letters and even on...
