There is no definitive answer to this question since every child develops at a different rate. However, most children are able to read the full Bible by the time they reach elementary school age. To be sure your child is ready, you can ask their teacher or reading specialist for guidance. Many children's Bibles also have reading level information included. Ultimately, though, it's up to you as the parent to decide when your child is ready to tackle the entire Bible. Age isn't the only factor - you know your child best and can gauge their readiness based on that knowledge. Thank you for asking!