A former Anglican Church youth group leader who repeatedly raped a boy, 11, over a two-year period told his victim the assaults were okay because they were not against God's word.

Simon Antony Jacobs, 58, from North Sydney, has pleaded guilty to four charges against two boys while he was a leader in the Church of England Boys Society, or CEBS, at two churches on the north shore during the 1970s and 1980s.

Due to be sentenced ... Simon Jacobs, centre, arrives at the Downing Centre courts. Credit:Kate Geraghty

The charges - one count of buggery and three counts of committing an indecent act - relate to offences committed while he supervised the boys, who were both 11, as a CEBS leader at Christ Church, St Ives, and St Swithuns, in Pymble.

Jacobs is also accused of molesting another two boys, both 10, during the same period.