Barna puts that number at about 64%, with half of those who became Christ-followers before age 13 being led to Christ by their parents.
If this is true, we have a narrow window (less than 20 years) of an extremely fruitful opportunity. While we know that only the Holy Spirit can move a person towards salvation, Christ-followers must also be faithful to the call to "make disciples of all nations" (Matthew 28:20). We are commanded to share the message of the Gospel -- that Jesus came to die on a cross, so that we can be saved and redeemed from our sin.
To keep reading, check out the full post on the Mission: Allendale blog.