Soon after the Internet boom in the 1990s, the Christian consulting firm WisdomWorks obtained software that could run automated chat groups -- allowing anonymous teens to ask candid questions.

Mark Matlock and his team called the project "Wise Intelligent Guide (WIG)."

Tech-savvy young people were careful, often repeating easy questions over and over to determine if the "bot" was truly autonomous, as opposed to being operated by hidden adults. A typical user would then probe with relatively safe questions -- like "Does God exist?"

Finally, there would be the "actual question the teen wanted to ask, usually about sex, depression, suicide, or abuse," noted Matlock and Barna Group President David Kinnaman, in their new book "Faith for Exiles." Typical questions: "How do I know if I am gay? What does God think about masturbation? What happens to people who commit suicide? I had sex with my boyfriend; what should I do?"

That was two decades ago. Today, most teens would use their omnipresent smartphones and take these personal questions straight to Google -- a secular oracle offering guidance on topics that religious leaders often avoid.

"The church has bubble-wrapped itself in an attempt to avoid thinking about the truly disruptive forms of technology that are everywhere in our world," said Kinnaman, reached by telephone. "Most church leaders think they can just use technology as a way of reaching people. … They aren't looking at the real impact of all this on their people. It's easier just to look the other way."

Meanwhile, practical decisions on tough lifestyle and religious questions often have long-term consequences.

Religious leaders have been forced -- after waves of Pew Research Center polling -- to acknowledge the surge in Millennial Americans (born 1981-1996) who now identify as atheists, agnostics or "nothing in particular" when asked about religion. In a 2019 update, Pew noted that 40% of Millennials are "nones."

The goal of the "Faith for Exiles" study was to find patterns among young Americans (18 to 29 years of age) who were raised as Christians.