Line 5 . . . love-performing night . . .
against "love-devouring death " in Act II, Scene iv, line 7 -- or, only apparently against: see here below
Lines 10-11 . . . Come, civil night,
Thou sober-suited matron, all in black
Juliet speaks. It reminds Death, especially if we consider that Morte (Death) is a feminine word in Italy, where the scene is supposed to happen; and she is imagined as a black lady.
Line 17 Come, night; come, Romeo . . .
are the two names meant as synonyms?
Line 43 What devil art thou that dost torment me thus?
maybe echoing Dante, Inferno 32.108; and, in its turn, echoed by S. T. Coleridge, The Rime of the Ancient Mariner, Part I, the third to last line
Line 75 . . . fiend angelical
see 2 Corinthians 11.14
Lines 85-7 . . . There's no trust,
No faith, no honesty in men; all perjur'd,
All forsworn, all naught, all dissemblers
the Nurse gives voice to her experience, as well as her own more or less unconscious impulses; but also quotes from the Psalms, see 53.3, etc.
Lines 118-9 Why followed not, when she said 'Tybalt's dead,'
Thy father or thy mother, nay, or both
are these Juliet's fears, or hopes?