Story here.

In Las Vegas former prostitutes and strippers evangelize their former sisters-in-sin. The names of the two evangelical groups: Hookers for Jesus, and JC's Girls.

Reminds me of an old story, I think from 19th-century England. A street preacher was holding forth on a corner, backed up by a Salvation Army band. A man in the crowd passed his card to the front to be given the preacher. It was the personal card of a famous lecturer who promoted atheism. After the sermon the lecturer and the preacher conversed, and the atheist challenged the preacher to a public debate, even offering to pay for the venue. The preacher responded, "I'll accept your challenge on one condition: I shall enter the auditorium at the head of a column of former drunkards, thieves, prostitutes, and others whose lives have been redeemed and uplifted through belief in Jesus. You will enter the hall at the head of a column made up of those whose lives have been similarly uplifed by their embrace of atheism. We then will debate.

The debate was never held.