The poet may be comparing the menacing sign of blood-red raindrops falling from the sky to a kind of biblical plague such as the frogs, lice, and flies that God brought upon the Pharaoh who would not let the Israelites under Moses go free (Exodus 8). Other examples of God’s punishment upon Pharaoh’s kingdom include cattle killing, boils, pestilence, hail, and fire (Exodus 9), and locusts and darkness (Exodus 10). Additionally, as Alice Eardley notes in her edition, Ovid depicts drops of blood falling from the sky in Book 15 of the Metamorphoses(Alice Eardley, editor, Poems, Emblems, and The Unfortunate Florinda Iter and Centre for Reformation and Renaissance Studies, 2014, p. 57). The context for these lines is the omens which presage the murder of Julius Caesar, a dire event with political ramifications: “when faire Venus saw; and saw with all, / Conspiring weapons threat the High-Priests [i.e., Caesar’s] fall; / Her colour fled … Thus, through all heauen, her Sorrowes vainely speake; / And melt the Gods: who, since they could not breake / The antient Sisters [i.e., the Destinies] adamantine doome, / By sure Ostents [i.e., portents] demonstrate Woes to come … Oft, Meteors through the aire their flames extend: / Oft, drops of blood from purple clouds descend” (George Sandys, translator, Ouids Metamorphosis Englished, mythologiz’d, and represented in figures, 1632, pp. 507-508). Pulter’s reference to blood-red drops that also “descend” to Earth picks up on this political suggestion, in its foreshadowing of confusion to a monarchy or dissolution to a monstruous hydra (line 28).