Dr Williams withdrew from a youth clinic in Kaitaia because the ethics were diametrically opposed to his medical and Christian principles, but teenage pregnancies were only one part of a much bigger problem.
The catalyst for launching a bid to do something was provided by the suicide late last year of a young man he had known since he was a toddler, after a disagreement with his girlfriend.
"Too many people in this community are making dreadful decisions like this, with huge consequences for them and other people, for silly reasons," he said.
"The lawless, rebellious attitude we see so much of in this town, and everywhere else, has enormous, far-reaching consequences.
"Too many young people simply cannot cope with the pressures of life, and all too often their reaction to what they see as a crisis is out of all proportion.
"I know the answer, and I'm going to give it a shot," he added.
"We need to address this on a spiritual level. For many young men especially the answer lies in giving them a different perspective of life and what it can offer them.
"We can counter the effects of families breaking down, of schools removing God from the syllabus and promoting this lawless, rebellious attitude, where young people are told it's their body and their life to do with as they will," he said.
"We need to give these people the information they need to see there is much more to life than they can see. We need to show them that God can transform their lives."
Dr Williams said he believed Edmund Burke's warning that all that was necessary for evil to triumph was for good men to do nothing - evil was clearly triumphing in Kaitaia, and very few people, parents, churches and schools included, were doing enough - and that nobody made a greater mistake than he who did nothing because he could only do a little.
"I can't change lives but God can," he said.
"It's for people to choose. If they choose not to accept God then that's up to them, but at least I will have given them the chance. If I do nothing I will have blood on my hands.
"We are the adults here, and it is up to us to respond to what is happening, to show these young people that there is much more to life than they can see at the moment.
"Please understand though, I am not judging anyone or criticising. All I want to do is offer help to people who desperately need it.
"People may choose not to believe what I say. Fine, this message never goes down well, but at least come and hear what we have to say, then make up your own minds."
Fathers, he added, were the key. Boys needed father figures to model their behaviour on, and without that positive influence, they were at huge risk.
"I want fathers to come back to their families, to take responsibility for their children," he said.
"That's our target group, young guys and their fathers.
"All we want to do is help. We're not going to judge anyone, criticise anyone, put anyone down or blame anyone.
"We just want them to know that they can have a better life than they are experiencing now."
