Islam's most fundamental concept is a strict monotheism called "tawḥīd". God is described in the Quran as: "Say: He is God, the One; God, the Eternal, the Absolute; He begot no one, nor is He begotten; Nor is there to Him equivalent anyone." Muslims deny the Christian doctrine of the Trinity and divinity of Jesus, comparing it to polytheism. In Islam, God is beyond all comprehension or equal and does not resemble any of his creations in any way. Thus, Muslims are not iconodules and are not expected to visualize God. The message of God is carried by angels to 124,000 messengers starting with Adam and concluding with Mohammad. God is described and referred in the Quran by certain names or attributes, the most common being "Al-Rahman", meaning "Most Compassionate" and "Al-Rahim", meaning "Most Merciful" (see Names of God in Islam).