Archai — The Consecrated Deity Form
Archai (from arca = worship/icon; 'the worshipped form') refers to one of the five modes of Bhagavān's gracious manifestation — His presence in the mūrti (consecrated image) in temples (kōyil) and homes (gṛha). The archai is not a representation or symbol of Bhagavān — it is Bhagavān, fully present, accepting worship.
The Gift of Archai: In His transcendent Para form, Bhagavān is inaccessible to embodied souls. In His vibhava forms (avatāras), He is available only at specific times and places. In the archai, He has made Himself permanently accessible — 'remaining in one place for the benefit of all who come.' The Āḷvārs sing with particular joy about the archai — because it is the form most directly available to the devotee.
How the Archai Came to Be: Bhagavān's archai form in each Divya Deśam has a specific origin story (sthala purāṇam) — in many cases, the deity is said to have appeared spontaneously (svayam-vyakta) or to have been installed by divine command. Once consecrated through pratiṣṭhā rituals, Bhagavān accepts the deity as His own presence.
The Āḷvārs and Archai: The 108 Divya Deśams are defined precisely by the specific archai forms of Bhagavān that the Āḷvārs blessed with their maṅgalāśāsanam (auspicious blessings). 'Wherever the Āḷvārs sang, there Bhagavān stands as archai forever.'