For what reasons did medieval writers use allegory?

Explanation:

Allegory is a rhetorical language figure that expands the meaning of the term, conveying one or more meanings beyond the literal. An allegory need not necessarily be expressed in the written text, being present in other forms of artistic manifestation, such as painting, drawing, sculpture, etc. In medieval literature, the use of this figure of language was very important because it allowed the authors to explore deep spiritual meanings without exposing themselves, because allegories protected them from political or religious persecution.