This is what Allah is speaking about Christians in Qur'an.
(5:14) We also took a covenant from those who said: 'We are Christians'; but they forgot a good portion of the teaching they had been imparted with.
Wherefore We aroused enmity and spite between them till the Day of Resurrection, and ultimately Allah will tell them what they had contrived.
(5:15) People of the Book! Now Our Messenger has come to you: he makes clear to you a good many things of the Book which you were wont to conceal, and
also passes over many things. There has now come to you a light from Allah, and a clear Book.
(5:16) through which Allah shows to all who seek to please Him the paths leading to safety. He brings them out, by His leave, from darkness to light
and directs them on to the straight way.
(5:17) Indeed those who said: 'Christ, the son of Mary, he is indeed God', disbelieved. Say (O Muhammad!): 'Who could have overruled Allah had He
so willed to destroy Christ, the son of Mary, and his mother, and all those who are on
earth?' For to Allah belongs the dominion of the heavens and the earth and all that is between them; He creates what He wills. Allah is All-Powerful.
(5:18) The Jews and the Christians say: 'We are Allah's children and His
beloved ones.' Ask them: 'Why, then, does He chastise you for your sins?' You are the same as other men He has created. He forgives whom He wills
and chastises whom He wills. And to Allah belongs the dominion of the heavens and the earth, and all that is between them. To Him is the eventual
(5:19) People of the Book! After a long interlude during which no Messengers have appeared there has come to you Our Messenger to elucidate the
teaching of the true faith lest you say: 'No bearer of glad tidings and no warner has come to us.' For now there indeed has come to you a bearer of
glad tidings and a warner, Allah is All- Power-ful.
Hope we have a good discussion!