Alistah Laishkochav, 71, used a rotation system which ensured each woman received an equal amount of sex.
Laishkochav was facing 22 charges including sexual penetration, indecent assault and recklessly causing injury to four children aged eight, nine and 10, between January 1987 and August 1991.
Prosecutor Jeremy Rapke told a Melbourne court that New Zealand-born Laishkochav gathered a group of loyal and trusting followers who where prepared to accept his rulings on religion, lifestyle and personal relationships.
Laishkochav slept every night with a minimum of two women and claimed all 65 children in the community were his offspring.
The hearing continues.