On thy grave the rain shall fall from the eyes of a mighty nation!

The line imagines a public death mourned on a national scale: “rain” becomes a metaphor for tears, and the “mighty nation” is personified as weeping collectively. Addressing the dead as “thy,” the speaker elevates the subject into a figure whose loss is not private but civic—someone whose grave will draw grief from an entire people. The hyperbole (“mighty nation”) suggests both the stature of the deceased and the depth of communal feeling, turning mourning into a kind of patriotic ritual. The image also implies continuity: rain falls repeatedly, so remembrance and sorrow may return in waves long after burial.