Furthermore, if Paul is regarded as the author, the impersonal character of the letter, which lacks personal greetings or any indication that the author has personal knowledge of his recipients, is incongruous with the account in Acts of Paul staying more than two years in Ephesus. For these reasons, most regard Ephesians to be a circular letter intended for many churches. The Jerusalem Bible notes that some critics think the words "who are ..." would have been followed by a blank to be filled in with the name of "whichever church was being sent the letter".