I really don't tell our kids not to read certain parts of the Bible. On the contrary, I tell them every word in the scripture is incredible.
My children have often heard me when I climb on my soapbox and wave dramatically at our bookshelves. "See these books? They are great but they are nothing-- just dry dust--compared to the Bible, God's Word! The Bible is not like any other book in any library anywhere. Every word in the Bible is alive and active."
For the Word of God is living and active....Heb. 4:12 NIV