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Since the Bible obviously supports the Christian view of Jesus, Muslims who want to deny the deity of Christ will have to argue that the Gospel has been corrupted. But if the Gospel has been corrupted, why does the Qur’an command Christians to judge by the Gospel? By commanding us to judge by what we find in the Gospel, the Qur’an has inadvertently ordered Christians to reject Islam!

But it gets worse for Muslims. The Qur’an affirms the inspiration and reliability of the Christian Scriptures (3:3-4, 5:47, 5:66, 7:157, 10:94), as well as man’s inability to corrupt God’s Word (6:114-115, 18:27). Muslims therefore cannot reject what the Gospel says, which leaves them with quite a dilemma. If the Gospel is reliable, Islam must be false, since the Gospel presents Jesus as God. Alternatively, if the Gospel is unreliable, Islam must be false, because the Qur’an tells us that the Gospel is the Word of God. Either way, Islam is false, and anyone who is searching for the truth will never find it in the Qur’an.

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This question in itself has a lot of different things to address. The scriptures have obviously been corrupted as the Quran attests to

Do you covet [the hope, O believers], that they would believe for you while a party of them used to hear the words of Allah and then distort the Torah after they had understood it while they were knowing? Quran 2:75

So woe to those who write the "scripture" with their own hands, then say, "This is from Allah," in order to exchange it for a small price. Woe to them for what their hands have written and woe to them for what they earn. Quran 2:79

The Christians should judge each other according to their own books laws when having legal disputes and this has nothing to do with the Quran or rejecting Islam.

The Quran attests to the veracity of the original books that were given to the previous prophets and not the corrupted versions that exist today.

This person who wrote this obviously does not understand the Quran and probably has never read it.