Cross examining the woman, Mr Brain’s barrister Iain Simkin KC suggested his client’s actions were not sexual.
The woman replied: “I think someone’s hands all over your body when you hadn’t asked them to put them there, that’s sexual assault.”
She told the court Mr Brain was “a predator,” who “picked off women he thought were vulnerable”.
The woman described another occasion when she feared the priest was going to rape her after pushing her to the floor of his home.
She said Mr Brain had suddenly pushed her down and said: “You need to admit that you’re somebody who wants to be raped and until you admit that you can’t be a spiritual person.”
The court heard Mr Brain would talk about his “mission” of “creating a sort of postmodern expression of sexuality”.
The woman said Mr Brain presided over a “deeply psychologically abusive” movement with a culture of fear, intimidation and bullying and his power was “reinforced by the Church,” which fast-tracked him for priesthood in 1991.
NOS was initially celebrated by Church of England leaders for its nightclub-style services which incorporated live music and multimedia and attracted hundreds of young people to its congregation.
But prosecutors have told the jury NOS “became a cult,” in which Mr Brain abused his position to sexually assault “a staggering number” of women from his congregation.
The trial continues.