Angels are often portrayed as guides or helpers, in written and spoken tales, in films and in visual works. They are prominent in many religious traditions. Angels are beings who are able to cross the borders between the spirit and human world. They are often seen as helpers, but also as news bringers, agents of retribution from angry gods, and ambiguous (dark/light) beings.

Wikimedia: Angels

Illustrations: Bookplates

This work (around 1320) is a bookplate from a French psalter. The book is stored in the Europeana Collection (National Library of the Netherlands). The image has 4 sections portraying a monk being rescued from fire by an angel who guides him to safety.

Angel guiding monk through fire

Series of 4 images portraying an angel guiding a monk through fire

Europeana collection.
http://www.europeana.eu/portal/record/9200122/BibliographicResource_1000056087957.html