No other religion except Islam is acceptable to God!

 

 Verses 19-20 of Chapter 3

Truly, the religion with Allah is Islam. Those who were given the Scripture (Jews and Christians) did not differ except out of rivalry, after knowledge had come to them. And whoever disbelieves in the Ayat (revelation) of Allah, then surely, Allah is Swift in reckoning. So if they dispute with you say: "I have submitted myself to Allah, and (so have) those who follow me.'' And say to those who were given the Scripture (Jews and Christians) and to those who are illiterate (Arab pagans): "Do you (also) submit yourselves'' If they do, they are rightly guided; but if they turn away, your duty is only to convey the Message; and Allah sees the servants.


Verses 83-85 of Chapter 3
Now do these people desire to give up the way of Allah's submission (Islam) and adopt a different way (knowing well), that all things in heavens and the earth, willingly or unwillingly, submit to Allah, and to Him shall all return? (O Prophet) say, "We believe in Allah and in the teachings which have been sent down to us, and also in those teachings sent down to Abraham, Ismail, Isaac, Jacob and his descendants, and in the guidance that was given by Allah to Moses, Jesus and other Messengers. We do not discriminate against anyone of them and we submit and surrender to Him." And whoso adopts any other than this way of submission (Islam), that way shall not be accepted from him and in the Hereafter he shall be among the losers.

Verses 151-153 of Chapter 6
O Muhammad, say to them, "Come, I will recite what limits your Lord has set for you." (He has enjoined:) (1) That you should not set up anything as a partner with Him,(2) and you should treat your parents kindly, (3) and you should not kill your children for fear of poverty, for We provide sustenance for you and will provide sustenance for them also, (4) and you should not go near indecent things whether they be open or hidden, (5) and you should not kill any living being whom Allah has forbidden to kill except by right. These are the things which He has enjoined on you: it may be that you use your common sense. And He has enjoined:(6) that you should not go near the property of an orphan except in the best way, until he reaches his maturity.(7) and you should use a full measure and a just balance. We charge one only with that much responsibility that one can bear, (8) and whatever you say should be just, even if it is concerning your own relatives,(9) and you should fulfill your covenant with Allah.Allah has enjoined these things on you so that you may follow the admonition.(10) And Allah also enjoins: "This way alone is My Right Way; therefore you should follow this Way and should not follow other ways lest they should lead you astray from His Way. This is what Allah has enjoined on you so that you may avoid crooked ways.