Can I Obey What Allah Said in Sura 5:47?

Muslims, are we supposed to believe what Allah says in the Quran or not? Do you believe the Quran?

I ask because of this ayah:

Surah 5:47
“Let the People of the Gospel judge by that which Allah hath revealed therein. Whoso judgeth not by that which Allah hath revealed: such are evil-livers.”

Allah says we Christians are supposed to judge by the Gospel. Am I allowed to obey this verse?

But muslims claim that the Gospel has been lost to corruption.

So why did Allah tell us to judge by a Gospel that you say has been lost?

How can I obey Sura 5:47?

Did Allah not know it had been lost or that it was going to be lost?

How can you know something that Allah didn’t speak about when he wrote the Quran?
If you say the Gospel was lost later, then you are still insulting Allah’s words in 5:47 by claiming that the words your God spoke is obsolete and invalid today. His word has lost it’s relevance.

Things get just as bad because of this ayah as well:

Surah 5:68

“Say O People of the Scripture! Ye have naught (of guidance) till ye observe the Torah and the Gospel and that which was revealed unto you from your Lord. That which is revealed unto thee (Muhammad) from thy Lord is certain to increase the contumacy and disbelief of many of them. But grieve not for the disbelieving folk.”

Are Christians allowed to follow Sura 5:68?

So according to Muslims, we Jews and Christians cannot find guidance as prescribed by 5:68 because the Torah and the Gospel is lost.

But that’s not what Allah says here.  You are defying His words. He says we are to find guidance in the Torah and Gospel. So are we supposed to believe the Quran or not?

Is Sura 5:68 also obsolete and invalid? How much more of the Quran have you muslims declared obsolete and invalid when Allah never said any such thing.

Muslims believe Allah wrote the Book in eternity, but He could not preserve it.  How much more of insults will Allah take from the Muslims?

“The same Bible Muhammad would have seen (if he ever did) is in both (1) The Vatican (Codex Vaticanus) and (2) British Museum (Codex Sinaticus). It is all there, including Jesus dying on the cross as atonement for our sins. And, His resurrection, and ascension into heaven – in front of many witnesses. The New Testament is preserved in almost perfect condition in these two Greek texts which both predate Muhammad and Islam by over 200 years. The Christian Bible predates Muhammad and Islam by more than 575 years. The Jewish Torah predates Muhammad and Islam by 1,000 – 3,000 years. Muhammad said for Muslims to read the Bible for “Guidance and Light.” For Islam to say they are corrupted, then is to call Muhammad a liar for recommending it.” – Steve Perez