It is important because if their names were on the ration books, they would have been found out by the Nazis and taken away, like all of the other Jews.
I hope this answer helped you! If you have any further questions or concerns, feel free to ask! :)
<span>Narrative poetry is a form of poetry which tells a story, often making use of the voices of a narrator and characters as well; the entire story is usually written in metered verse. The poems that make up this genre may be short or long, and the story it relates to may be complex.</span>