Going to find a barefoot brother out,
One of our order, to associate me,
Here in this city visiting the sick,
And finding him, the searchers of the town,
Suspecting that we both were in a house
Where the infectious pestilence did reign,
Sealed up the doors and would not let us forth.
So that my speed to Mantua there was stayed.

In Act 5, Scene 2, Friar Lawrence learns from his Franciscan colleague, Friar John, that he was unable to deliver the news about Juliet’s death being fake to Romeo because an outbreak of the plague—yet the latest manifestation of fate—prevented him from doing so.