This line belongs to Act IV, scene iii of Romeo and Ju.liet.
In this scene, Ju.liet is about to drink the vial of potion that will make her appear dead. She knows that, after she does, she will be taken to the cript where all her dead relatives are buried. She worries about what will happen if the potion does not work. In these lines, she wonders what it would be like to be alive and wake up in the tomb. She thinks of the death and night that would surround her, as well as the bones of all her ancestors, and she is filled with fear at the prospect of this happening.
