I recently received an email from a Pastor who was impressed at a 5 year old who had learned 46 bible verses. While this is a good start to what could become a great start, don't miss the point. She knows nothing of Christ, what she does know is how to give back what was given to her. (that will preach) What I am saying is, we have too many Christian who can recite scripture, yet have no relationship or know of the personage of Jesus Christ.
Be impressed with the teen who speaks to others and say, when I was a child I came to know and love the Lord by the love my family had for Him and made me want to know Him for myself. Child learn what they see, and ignore what you say, when it does not line up with what you have said. Think about this as a good start, but don't drop the ball.