Shaykh al-Islām Ibn Taymiyyah (d. 728 AH) said:

“The [attitude] they [the Christians] have taken concerning the Qurʿān is the very same [attitude] they have adopted with [all] of the books [of Allāh] that have preceded it, and the speech of the Prophets as related in the Tawrāh, the Injīl, the Zabūr and others. For truly these resources contain countless passages that explicitly call to the Oneness of Allāh and the fact that the Masīḥ [Jesus] was his slave. There are but a few words [in those resources] that hold a degree of obscurity. They [the Christians] chose to hold on to those few obscure, vague, problematic elements from the older books [of Allāh], and leave the plentiful, clear, transparent, actionable passages. Thus, they adopt this attitude with the Qurʿān just as they have done with the books [of Allāh] that have preceded it. Except that those [preceding] books clearly testify as to the prophethood of the [messenger] who brought it and [the prophethood] of Muḥammad (may the peace of blessings of Allāh be upon him). [Consequently], the [Christians] are in a perpetual state of contradiction and inconsistency. Hence, the corruption and falsehood of whatever position the Christians choose to espouse quickly becomes apparent as they do not believe in all that was revealed unto them.”

Source: Al-Jawāb Al-Ṣaḥīḥ 1:378
Translated by: Riyāḍ Al-Kanadī