Salaam/peace;
Grace Seeker: Your post only gave reasons you think the Bible is corrupted, it did not at all address WHY Muslims quote from it.
Why Do Muslims Quote from the Bible although It Is Corrupted?
pl. visit link to read the full answer.
.... In the Jewish and Christian or any other scripture, there are some parts that talk about moral behavior and wisdom, or call people to work for perfection and cooperation with others.
Such passages we accept and benefit from and share with others as a common heritage and a source of comfort and solace.
Islam commands Muslims to make use of anything that helps them attain a better life and not to feel hesitant to accept wisdom from other people.
When Muslim scholars quote or refer to the Jewish or Christian scriptures, they are trying to find similarities or common grounds between nations in order to find ways of cooperation and coexistence."
You can also read:
Domains of Muslim-Christian Cooperation
Why Muslims Believe in the Bible
Has the Bible Been Tampered With?
Is the Bible the Word of God?
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Did mankind tamper with the Old Testament
http://wings.buffalo.edu/sa/muslim/library/jesus-say/ch2.3.html
"How can you say we (the Jews) are wise and the law of the Lord is with us, when in fact the false pen of the scribes has made it into a lie?"
Jeremiah 8:8 (Revised Standard Version)
"And because of their (the Jews) breaking their covenant, We have cursed them and made hard their hearts.
They change words from their places and have abandoned a good part of the message that was sent to them. And you will not cease to discover deceit in them, except a few of them.
But forgive them and overlook (their misdeed). Verily! Allah loves the kindly."
The noble Qur'an, Al-Maidah(5):13.
Is the Jewish Bible or Qur'an anti-Semitic ?
http://jews-for-allah.org/the-Jewish-Bible/jewish_bible_or_quran_anti-semitic.htm