The Quran emphasizes the unity of the angels sent to Abraham and Lot, which shows that the concept of God as three distinct persons is illogical.

The Quran presents a narrative where angels are referred to as 'guest' in singular form, despite being three distinct beings. This grammatical inconsistency raises questions about the Quran's divine authorship. A Muslim might argue that the singular usage emphasizes the unity of the angels in their mission. However, this argument inadvertently supports the Christian understanding of the Trinity, as it illustrates that three distinct entities can function as one in purpose. Therefore, if the Quran can present a singular concept of multiple beings, it does not logically contradict the Christian belief in a triune God. This literary inconsistency in the Quran invites further scrutiny into its claims of divine revelation.