Is Bible corrupted?

Quran itself confirms that Bible is not changed or corrupted as we read in these Suras:
Sura 41:41. Those who reject the Message when it comes to them (are not hidden from Us). And indeed it is a Book of exalted power.
Sura 41:42. No falsehood can approach it from before or behind it: It is sent down by One Full of Wisdom, Worthy of all Praise.
Sura 15:9. We have, without doubt, sent down the Message; and We will assuredly guard it (from corruption).
These Suras say that God is guard of message that He sent in this world but Muslim scholars are saying that the Bible has been corrupted so my question is who is right? Allah's statement or scholar's statement? Because both are contradictory statement so both cannot be true. One of them are lying either Allah or scholar?
Quran also says in Sura 3:3, It is He Who sent down to thee (step by step), in truth, the Book, confirming what went before it; and He sent down the Law (of Moses) and the Gospel (of Jesus) before this, as a guide to mankind, and He sent down the criterion (of judgment between right and wrong).
Sura 3:48 "And Allah will teach him the Book and Wisdom, the Law and the Gospel,
Sura 5:46 And in their footsteps We sent Jesus the son of Mary, confirming the Law that had come before him: We sent him the Gospel: therein was guidance and light, and confirmation of the Law that had come before him: a guidance and an admonition to those who fear Allah.
All the above Suras tell us that Allah sent the Law and Gospel in this world and he will protect it from corruption. When Allah saying that He will guard the message that he sent then actually He is lying or He has no capability to protect His word?