Author, pastor, and former atheist Lee Strobel says in one sermon:

How can I tell you the difference God has made in my life? My daughter Allison was 5 years old when I became a follower of Jesus, and all she had known in those five years was a dad who was profane and angry. I remember I came home one night and kicked a hole in the living room wall just out of anger with life. I am ashamed to think of the times Allison hid in her room to get away from me.

Five months after I gave my life to Jesus Christ, that little girl went to my wife and said, "Mommy, I want God to do for me what he's done for Daddy." At age 5! What was she saying? She'd never studied the archeological evidence [regarding the truth of the Bible]. All she knew was her dad used to be this way: hard to live with. But more and more her dad is becoming this way. And if that is what God does to people, then sign her up. At age 5 she gave her life to Jesus.

God changed my family. He changed my world. He changed my eternity.