56 year old Kamm is also known as The Little Pebble.
The Sydney Morning Herald reports that he ordered the girl, then 14, to have sex with him. He said it was God's will because she was chosen by the Virgin Mary to help him repopulate the earth with his mystical seed.
The purported seer is already serving a minimum three-and-a-half year term for an almost identical offence.
Sentencing him to an additional four-year non-parole term today, District Court Judge Peter Berman said Kamm took advantage of his position as leader of his cult near Nowra, on the NSW South Coast, to satisfy his own desires.
Cult leader gets extra four years (Sydney Morning Herald, 25/8/07)
LINKS (not necessarily endorsed by Church Resources)
William Kamm's website
Little Pebble loses appeal (CathNews, 10/7/07)
"Little Pebble" guilty of abuse, jury finds (CathNews, 31/5/07)
Excommunicated "mystic" on trial over new abuse charges (CathNews, 15/2/07)
Federal cash for Little Pebble cult school (CathNews, 3/8/04)
Little Pebble to face trial (CathNews, 2/11/03)
Little Pebble disciple cleared of sex assault charges (13/2/03)
"Little Pebble" to face court next month on sex charges (CathNews, 5/2/02)
Church bans NSW South Coast cult 'miracle worker' (CathNews, 18/6/02)