Imagery is the figure of speech used when the author wants to describe objects, situations and actions in a way that stimulates the reader's five senses, allowing him to hear, see and feel the characteristics of the description. We can see an example of imagery in the lines above, as the author describes features in which the reader knows the sensation and can feel it again when reading the lines.
These plays were about the bible, saints, or sometimes just about a situation where it's shown the correct path to be taken when choices seem ambiguous. Those plays were meant to teach others how to act and how to be moral and good.
