Mette Birkedal Bruun takes about the Gospel of Matthew, which presents Jesus introducing the Lord's Prayer with an injunction to enter into the chamber and close the door so as to pray in secret (Mt 6.6). For early Christian authors, this command elicited a series of questions: How to reconcile the entry into the chamber with the command to pray everywhere (cf 1 Tim 2)? Where and what is this chamber – not to mention its door? How are praying persons to comport themselves in the chamber under God's watchful eye? In this talk, Mette discusses third- and fourth-century expositions of Mt 6.6 and ponder their place in privacy studies.