By far the most common way we're formed in faith is we receive it from our parents. There are Christian conversions from other religions and non-religious backgrounds, but these are more rare. Many of us are Christians because are parents were also Christians. We are all formed by tradition with choices made by parents, in our language, in our culture, etc. But we don't just give our kids a Bible and expect them to be Christian. They need the understanding and experience of Christian tradition!
