You do not know what that word means. Ignorant is not inherently bad. I ma ignorant of a lot of things. http://dictionary.reference.com/browse/ignorant What you probably meant was arrogant, or another synonym.
Well, some time ago, I asked two different Jewish rabbis that question, one Conservative and one Orthodox. One said come back when I had a Doctorate in Theology and the other said the Jews don't believe what the Bible says.