What is Dimsdale’s reaction to the glove and the Sexton’s version of the meteor’s meaning? Why?

The sexton hands him his glove, telling him that it was found on the scaffold where Satan must have left it. The man then tells Dimmesdale that last night, a large A was seen in the sky, which was interpreted to mean "Angel" in honor of Governor Winthrop's death. Dimmesdale says,

"Thank you, my good friend," said the minister gravely, but startled at heart; for, so confused was his remembrance, that he had almost brought himself to look at the events of the past night as visionary. "Yes, it seems to be my glove, indeed!"