Your children will face those who say that Jesus never really lived or that He wasn't really God. You can help prepare them for this by making sure their faith in Him is solidly grounded.
For biblical testimonies from eyewitnesses, see passages like Acts 2:22, 24, 32, 36 and 2 Peter 1:16. But can you "prove" to your children that Jesus really lived? Perhaps not. Still, you can offer convincing evidence. If you like, read the following to them or share it in your own words.
Most younger children can grasp a very basic explanation. It might be expressed this way:
"Everyone, even you, does some wrong things. These wrong things are sin and make God sad. But God loves us so much that He sent His Son, Jesus. Jesus died for us so that we could be forgiven and could be God's children. Just as you need to tell me you're sorry when you've done something wrong, you need to tell God you're sorry for doing wrong things and ask Him to forgive you because of what Jesus did. He will. From then on, you are God's child. And if you do anything wrong after that, you can ask God to forgive you and help you do better — and He will."
If your older child wonders why the sacrifice of Jesus was necessary, you may want to share the following:
To further help your child understand this, try the following: