104:1.9

The followers of the Islamic faith likewise failed to grasp the idea of the Trinity. It is always difficult for an emerging monotheism to tolerate trinitarianism when confronted by polytheism. The trinity idea takes best hold of those religions which have a firm monotheistic tradition coupled with doctrinal elasticity. The great monotheists, the Hebrews and Mohammedans, found it difficult to distinguish between worshiping three gods, polytheism, and trinitarianism, the worship of one Deity existing in a triune manifestation of divinity and personality.