Martin Luther had good cause to declare: "There is something in the office of a bishop which is dreadfully demoralizing. Even good men change their natures at consecration; Satan enters into them, as he entered into Judas, as soon as they have taken the sop." But to return to the primitive Church, a famous Apostle of that simple era was Priscilla, a Jewess, who was one of the theological instructors of Apollos (the fellow-minister, or fellow-servant, to whom Paul refers in his first letter to the Corinthians). There is strong reason to believe that the Apostle Priscilla, in co-operation with her husband, the Apostle Aquila, performed the important task of founding the Church of Rome: for Paul, writing to the Christians, admits that he himself has not yet visited that city; there is no proof whatever that Peter ever went to Rome at all (but, on the contrary, much proof that he wished to confine Christianity to Jewish converts); and yet Paul, hailing Priscilla by the current term which specially active Apostles and bishops used in addressing other specially active workers in the Apostolate, "Helper in Christ Jesus," eulogizes her as one known, gratefully, by "all the churches of the Gentiles," and recognizes a Church of Rome as established in Priscilla's own house (see Paul's letter to the Romans, chapter 16). It is highly probable that that was the tiny acorn from which has grown the present great oak--the Roman Catholic Church,--which would profit much by more remembrance and imitation of the modest and undogmatic women who helped to give it being and who nursed it through its infancy.