Welcome Tahmeed,
AC is organized, maybe you're a bit confused because you are new here and you don't know your way around, but it won't take long trust me

as for your first question, if you are Arab you would know that the verse says " and the Jews have
Said " which is in the past tense, meaning that a part of Jews in the
Past used to believe Ezra was the Son of God, so the whole point is to show how People make False Assumptions on the identities of Fellow Humans, and so it gave to examples, which are the Prophets Ezra and Jesus, the Qur'an and Ahadith never say the Jews of Today hold such beliefs.
here's an article on this subject:
http://www.answering-christianity.com/quran/qb005.htmas for your second question, here's a refutation to it:
http://www.answering-christianity.com/rebuttal_false_prophecies.htm---------
i need to ask you a question at this point, did you really, REALLY full into their trap that easily?

, the Bible is the Least Sensible Book on Earth! they are last people that should ever think of bringing the False Predictions and Contradictions "arguments" on the Table! i mean, did you check the 101 Contradictions in the Bible? :
http://www.answering-christianity.com/101_bible_contradictions.htm