Surah 5. Al-Ma'ida, Ayah 14

Thus the Qur'an elliptically rejects their claim of being true followers of Jesus: for, by wrongfully elevating him to the status of divinity they have denied the very essence of his message.

I.e., their going astray from the genuine teachings of Jesus - and thus from true faith in God - is the innermost cause of the enmity and hatred which has so often set the so-called Christian nations against one another and led to unceasing wars and mutual persecution.

The Christian Covenant may be taken to be the charge which Jesus gave to his disciples, and which the disciples accepted, to welcome Ahmad (Q. lxi. 6). Glimpses of this are to be found in the Gospel of St. John even as it exists now (John xv. 26. xvi. 7). It is those who call themselves "Christians" who reject this. True Christians have accepted it. The enmity between those who call themselves Christians and the Jews will continue till the Last Day. A) The change from the First Person in the beginning of the verse to the Third Person here illustrates the change from the personal relationship of the Covenant, to the impersonal operation of Justice at Judgment. Cf. xxxv. 9.