Marilyn at a fund-raising dinner as a leader for the Junior Division of the United Jewish Appeal of Greater New York, 1955.Norma Jeane was baptized at the Foursquare Gospel Church, the center of an evangelical movement founded by Sister Aimee Semple McPherson. Foster parent “Aunt” Ana Lower, however, schooled Marilyn in Christian Science from the period 1938 to 1946, and as she took her first steps into the movie business, Marilyn was sometimes seen with Christian Science religious books.
When she was with Fred Karger, she was taken to Victor’s Catholic Church, where according to some biographers she first met Joan Crawford.
During filming of Gentlemen Prefer Blondes (1953), Jane Russell invited Marilyn to her home to attend sessions of the Hollywood Christian Group. Most biographers record that Marilyn only went once.
Marilyn converted to the Jewish faith just before marrying third husband Arthur Miller. Miller writes that it was Marilyn’s desire to go through with a religious wedding ceremony and conversion to Judaism: “I’m not religious, but she wanted to be one of us… I don’t think you could say she became a Jewess, but still she took it all very seriously. I would say she wanted to join me and become part of my life.”
Marilyn converted to Judaism on July 1, 1956 (the 22nd of Tammuz, 5716, in the Jewish calendar). Her certificate of conversion was signed by Milton H. Greene, Arthur Miller, and Rabbi E. Goldberg, who also presided over the Jewish weeding ceremony uniting Arthur and Marilyn.
-From Adam Victor’s The Marilyn Encyclopedia