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Manwë is depicted as the mediator between Eru Ilúvatar, the creator, and the other Valar, emphasizing that even the Valar do not have direct access to Eru. When they have important matters to discuss, they turn to Manwë, who can be likened to a prophet. One exception to this communication is Mandos, who governs the realm of the dead. Although Mandos was urged by the other Valar to bring Beren back from the dead, he sought confirmation from Eru due to the unprecedented nature of the request.
The video explains that, aside from Mandos, no other Valar know the fate of human souls after death; only he knows their destination after the period of remembrance. This suggests that the destiny of men after death may not lie within the Valar's control or be entirely divined in the Music of the Ainur.