If you are referring to the Nurse, he sends Juliet a message to meet him at Friar Lawrence's cell where they will be married.
the Nurse
Romeo's special messenger.
In Romeo and Juliet, the extended metaphor of the nurse serves to highlight her blended roles as a maternal figure to Juliet and a messenger between the lovers. Her character symbolizes the blurred lines between love and duty, as well as the complexities of relationships and communication. The nurse's loyalty and devotion to Juliet also emphasize themes of loyalty and sacrifice in the play.
The Nurse in Romeo and Juliet serves as a close confidante and messenger between Romeo and Juliet, facilitating their secret meetings and aiding in their plans to marry. She also inadvertently plays a role in the tragic events that unfold, such as providing Juliet with the information that leads to her faking her death.
Friar Lawrence organises for Friar John to bring Romeo news of Friar Lawrence and Juliets plan (Act Five, Scene 1)
Juliet says that if he is serious and plans to marry her, she will send a messenger to meet him at nine o'clock. This messenger will be the Nurse, of course. Romeo will then reveal whatever wedding plans he's made to her. Have you noticed how little wedding planning Juliet does in the play?
She doesn't, and she doesn't have to. She is Juliet's servant.
Juliet sends a messenger to Romeo in the morning to find out if he still wants to marry her as they had discussed the night before. She is eager to know his intentions and is anxious to hear his response.
Transcription
Do you mean the servant with the guestlist for the party? No, he's illiterate. Balthazar is a kind of messenger, but he can certainly see: he says "I saw her laid low." There is no reason to think that Friar John is blind.
He's a messenger, the guy who's supposed to tell Romeo that Juliet's death is a fake. But he's not a very good messenger; he fails to get the message to Romeo. (Did he think maybe to tell Romeo's man Balthazar?)
Hermes is the messenger god and also serves as a guide to the Underworld.