I dont know that the Bible is really full of that much wisdom....  Some wisdom that others might call common sense, and also some not so wise parts...  It supports racism, sexism, war, slavery, violence, judgement, fear, homophobia....  It has a couple good parts, but has some nasty stuff in there too....  Hard for a child to be able to sift through the bad and discern what is appropriate - especially when the Bible makes all those battles sound so cool and "holy!" 

I think there is a reason why some Christians are so wonderful and some are so evil - because both sides of the coin are in the Bible, and people choose which parts to focus on.... 

(BTW - I do find the Bible to be a fascinating read, I just find a lot contradictions and outdated ideas in there too - I'd rather read my child stories of the Buddha or Dao or something more uplifting I think....)