How can we witness to Muslims and be ready to answer most of their questions and allegations without getting tongue tied or short for answers? The answer is: Study and know your Bible, and study the Qur'an as much as you can.
In this article, I will briefly discuss allegations that state that the Bible has been tampered with and corrupted by Jews and Christians. If you are a Christian trying to evangelize and witness to Muslims, you might come across the exclamation, "Has not the Holy Bible been corrupted by Christians?" Or, "Has not the Bible been replaced by the Qur'an?"
To answer this, we will go right back to the Qur'an itself. The Qur'an frequently refers to the Bible and the Christians; it states that the "Injil"--that, is the Gospel--is their light and guidance. "We bestowed on him [Jesus] the Injil wherein is guidance and light, confirming that which was (revealed) before it in the Torah [the writings of Moses]--a guidance and an admonition unto those who ward off evil" (5:46). Also, the Qur'an states that the Injil is guidance for all mankind: "He has revealed unto you (Mohammad) the scripture with truth, confirming that which was revealed before it, even as he revealed the Torah and the Gospel aforetime, for guidance to mankind" (3:3, 4).
If Mohammad was in doubt concerning the Qur'an, the Qur'an states that he was to go back to "the people of the book," another term for the Jews and the Christians: "And if you (Mohammad) are in doubt concerning that which we revealed unto you, then ask those who read the scripture before you" (10:94).
You see, not once does the Qur'an state that the Injil is corrupted. Where, then, do Muslims bring their allegations from? They basically rely on Christians' ignorance of the Qur'an and, ironically, of the Bible as well.
So my friend, if the Injil, the Bible, is corrupted, then why does the God of Mohammad tell him to refer to it as a light and guidance to the people before him? Please be informed and prepared to represent God's word and defend his truth. For there is no other truth you want to spend your time and energy on!
Christ's peace,
--Name withheld