If the message of the Bible has been changed then the Qu’ran is wrong and Islam is false.

The Qu’ran states that the Bible (Torah + Injeel) is part of the Word of Allah (Surah 2:87; 3:3; 5:46) and that the Word of Allah cannot be changed (Surah 6:34; 6:115; 10:64).
It also states that we have the Word of Allah in our possession at this very moment in time (Surah 7:157).
As such, if the Bible’s message has been changed, then the Word of Allah has been changed – which would mean that the Qu’ran is wrong and Islam is false, because Allah said in the Qu’ran no one could change his Word.
Therefore, Muslims are forced to accept the Bible.

Bring it to any Imam, it is completely airtight.

The Qu’ran says that BOTH the Torah and the Injeel are part of the Word of Allah, that we have it in our possession now, and that the Word of Allah cannot be changed. As such, if the Bible has been changed, then Islam is false, because Allah’s Word has been changed.