As to the question that the holy and spiritual souls influence, help and guide the creatures after they have cast off this elemental mould-this is an established truth of the Bahá’ís.
(‘Abdu’l-Bahá: Tablets of ‘Abdu’l-Bahá, Vol. III, p. 543)
The wealth of the next world consists in nearness to God. It is certain therefore that those who enjoy near access to the divine threshold are permitted to intercede, and that this intercession is approved in the sight of God. But intercession in the next world bears no resemblance to intercession in this world. It is an altogether different condition and reality, which cannot be expressed in words.
(‘Abdu’l-Bahá, Some Answered Questions, 2014 edition, p. 62)