| Quote #1
Let not thy mother lose her prayers, Hamlet:
"Wittenberg" is shorthand for "Protestant," since that's the city and university where Martin Luther wrote his Ninety-five Theses. But the play can't seem to make up its mind about whether or not the play is set in a Catholic or Protestant world—just like England itself, throughout most of the 16th century.
| Quote #2
I am thy father's spirit,
Hmm. This is interesting. The Ghost not only claims to be Hamlet's "father's spirit"; it also suggests that it's a Purgatorial ghost. Purgatory was often imagined as a fiery place where souls "purged away" their sins before going to heaven. Major difference, though: Purgatorial spirits returned to ask loved ones for prayers that could help them reach heaven faster. This ghost? He's a little more interested in revenge.
| Quote #3
Revenge his foul and most unnatural murder.
Purgatorial spirits weren't in the habit of asking living relatives to murder other people (murder being a major sin for both Protestants and Catholics) to help them get to heaven. That's more along the lines of a vengeful ghost. Is Shakespeare just picking and choosing? Or is he purposefully weaving together multiple literary and cultural traditions?