The most important element of Mrs. Turpin’s vision in the garden is the staircase to Heaven populated by “white trash” and Negros.
During her visit to the doctor’s office, something strange happens to Mrs. Turpin. She has an interaction with a college girl that completely baffles her. The girl calls her a “a wart hog” and tells her to go back to Hell. Mrs. Turpin wants to deny this and laugh it off, but she feels as though the girl has seen into her soul.
Later, Mrs. Turpin is in her garden when she has an exhaustive vision.
She saw the streak as a vast swinging bridge extending upward from the earth through a field of living fire. Upon it a vast horde of souls were tumbling toward heaven.
At this point, she realizes that everyone is going to Heaven except her. The people she considered white “trash” will go to Heaven. The people she called “nigger” will go to Heaven. She has come to a realization that she terms “abysmal” that her ideas about race and class are pure ignorance and arrogance.
The vision does allow some room for interpretation. Some readers may assume it means that Mrs. Tuprin is not going to change, because she hears the crickets chanting a chorus of hallelujah. On the other hand, that same evidence can be used to support the fact that she has changed and seen the light. Either way, it is an important vision.