What a stupid reply to the kid at the end!
When he asks "why did the king send a boy to fight?" (Meaning, why did David fight Goliath.)
If the mother had known the actual history of that fight, she'd have been able to give an intelligent answer.
David had God on his side. He couldn't have lost the fight. David was blessed by God and eventually became King.
Of course, with all of the atheists in Hollywood, I'm not surprised that this information wasn't included. They've probably never read the Bible (or the Torah). Although I do remember that the koran was mentioned (as if that counts! Satan's book!)