If they could ask themselves questions, certainly they were born-in and will graduate out. A similar problem was debated when I was an undergrad. Columbia College was the site of student strikes and building take-overs. The faculty were detached. They were very antiwar, too. There was an immense problem administratively for those headed to medical school. The administration decided to actively recruit deferential students from Catholic and Jewish religious families. Yeshiva girls/boys we called them. They knew ever fact but could not reason or think. The faculty was fed up with this new ideal student. Outside the Witnesses, hard questions are appreciated.
On another tangent, I'm now Anglican and have gone bonkers with all the different heresies/discussions concerning the nature of Christ. I know the Trinity is an extrapolition of the Bible. Recently, our priest rejected all the teachings of the Great Councils to observe that God has different aspects from our experience. The Trinity is a way of affirming that we experience God differently but the same God is present. They should make law grads read the formulations and answer questions as a bar exam feat.
I never know what to say to them b/c I feel I should plant a seed of doubt that might gestate later. The primacy of the Bible has always been my stuffed toy. Jesus probably wouldl think someone with a lot of Jeopardy type Bible knowledge was a trickseter. Good character seems a good test. The problem with good character is that many, many atheists have good character. It is back to the folly of the cross. What truly bothered me most of all for me to leave was knowing that all my dear friends and family members, the very government that provided order from chaos, was coming to a very painful and tortured end at Armageddon. I hated 98% of JWs, esp. my local KH. Even as a child, I knew God was not that god. It must be a lesser god, one that is not evolved. A few years later I sat and heard about Gnosticism for the first time.
I imagined the Bible always existed. Next, I learned about canonization, an overtly political process. Gnosticism showed me other views of Christianity were just as valid. Paul vs. James was the next step.
Most people believe in the Bible as the sacred document.