You didn't indicate which piece of glass art the question is about
it is a hyperbole..
Hyperbole is when you use language to exaggerate what you mean or emphasize a point. It's often used to make something sound much bigger and better than it actually is or to make something sound much more dramatic. Hyperbole is a figure of speech.
In "The Minister's Black Veil" by Nathaniel Hawthorne, when the "deputation to the church" attempted to "deal with Mr. Hooper about the mystery of the veil" they did not take any action out of fear of him, as the minister states "Have men avoided me, and women shown no pity, and children screamed and fled, only for my black veil?" The deputation of the church did nothing and had claimed it was "pronouncing the matter too weighty to be handled".
