An invocation (from the Latin verb invocare "to call on, invoke, to give") may take the form of:
- Supplication, prayer or spell.
- A form of possession.
- Command or conjuration.
- Self-identification with certain spirits.
These forms are described below, but are not mutually exclusive. See also Theurgy.
Supplication or prayer 
As a supplication or prayer it implies to call upon God, a god or goddess, a person, etc. When a person calls upon God, a god, or goddess to ask for something (protection, a favour, his/her spiritual presence in a ceremony, etc.) or simply for worship, this can be done in a pre-established form or with the invoker's own words or actions. An example of a pre-established text for an invocation is the Lord's Prayer.
All religions in general use invoking prayers, liturgies, or hymns; see for example the mantras in Hinduism and Buddhism, the Egyptian Coming Out by Day (aka Book of the Dead), the Orphic Hymns and the many texts, still preserved, written in cuneiform characters on clay tablets, addressed to Shamash, Ishtar, and other deities.
As alternative to prayer 
An invocation can also be a secular alternative to a prayer. On August 30, 2012, Dan Nerren, a member of the Humanist Association of Tulsa, delivered a secular invocation to open a meeting of the City Council of Tulsa. Nerren was invited to perform the invocation as a compromise following a long-running dispute with the City Council over prayers opening meetings. The invocation was written by Andrew Lovley, a member of the Southern Maine Association of Secular Humanists who had previously used the invocation in 2009 to invoke an inauguration ceremony for new city officials in South Portland, Maine.
A form of possession 
The word "possession" is used here in its neutral form to mean "a state (potentially psychological) in which an individual's normal personality is replaced by another". This is also sometimes known as 'aspecting'. This can be done as a means of communicating with or getting closer to a deity or spirit and as such need not be viewed synonymously with demonic possession.
In some religious traditions including Paganism, Shamanism and Wicca, "invocation" means to draw a spirit or Spirit force into ones own body and is differentiated from "evocation", which involves asking a spirit or force to become present at a given location. Again, Crowley states that
To "invoke" is to "call in", just as to "evoke" is to "call forth". This is the essential difference between the two branches of Magick. In invocation, the macrocosm floods the consciousness. In evocation, the magician, having become the macrocosm, creates a microcosm.
Possessive invocation may be attempted singly or, as is often the case in Wicca, in pairs - with one person doing the invocation (reciting the liturgy or prayers and acting as anchor), and the other person being invoked (allowing themselves to become a vessel for the spirit or deity). The person successfully invoked may be moved to speak or act in non-characteristic ways, acting as the deity or spirit; and they may lose all or some self-awareness while doing so. A communication might also be given via imagery (a religious vision). They may also be led to recite a text in the manner of that deity, in which case the invocation is more akin to ritual drama. The Wiccan Charge of the Goddess is an example of such a pre-established recitation. See also the ritual of Drawing Down the Moon.
The ecstatic, possessory form of invocation may be compared to loa possession in the Vodou tradition where devotees are described as being "ridden" or "mounted" by the deity or spirit. In 1995 National Geographic journalist Carol Beckwith described events she had witnessed during Vodoun possessions:
A woman splashed sand into her eyes, a man cut his belly with shards of glass but did not bleed, another swallowed fire. Nearby a believer, perhaps a yam farmer or fisherman, heated hand-wrought knives in crackling flames. Then another man brought one of the knives to his tongue. We cringed at the sight and were dumbfounded when, after several repetitions, his tongue had not even reddened.
Possessive invocation has also been described in certain Norse rites where Odin is invoked to "ride" workers of seidr (Norse shamanism), much like the god rides his eight-legged horse Sleipnir. Indeed, forms of possessive invocation appear throughout the world in most mystical or ecstatic traditions, wherever devotees seek to touch upon the essence of a deity or spirit.
Command or conjuration 
Some have performed invocation for the purpose of controlling or extracting favors from certain spirits or deities. These invocations usually involve a commandment or threat against the entity invoked.
The following is a curious example of such an invocation, found engraved in cuneiform on a statue of the Assyrian demon Pazuzu. Although it seems to constitute an identification with the demon, it was actually considered a protective amulet with the power to command this entity not to harm people or their possessions.
I am Pazuzu, son of the king of the evil spirits, that one who descends impetuously from the mountains and bring the storms. That is the one I am.
I do not bake the bread, nor with it salt,
Nor do I cook the honey with the wine,
I bake the body and the blood and soul,
The soul of (great) Diana, that she shall
Know neither rest nor peace, and ever be
In cruel suffering till she will grant
What I request, what I do most desire,
I beg it of her from my very heart!
And if the grace be granted, O Diana!
In honour of thee I will hold this feast,
Feast and drain the goblet deep,
We will dance and wildly leap,
And if thou grant'st the grace which I require,
Then when the dance is wildest, all the lamps
Shall be extinguished and we'll freely love!
Self-identification with certain spirits 
Invocation can refer to taking on the qualities of the being invoked, such as the allure of Aphrodite or the ferocity of Kali. In this instance the being is literally called up from within oneself (as an archetype) or into oneself (as an external force), depending on the personal belief system of the invoker. The main difference between this type of invocation and the possessive category described above is that the former may appear more controlled, with self-identification and deity-identification mixed together. In practice, invocations may blend many or all of these categories. See for example this Hymn to Astarte from the Songs of Bilitis, first attributed to a contemporary of Sappho (but actually written by Pierre Louys in the 1890s):
Mother inexhaustible and incorruptible, creatures, born the first, engendered by thyself and by thyself conceived, issue of thyself alone and seeking joy within thyself, Astarte! Oh! Perpetually fertilized, virgin and nurse of all that is, chaste and lascivious, pure and revelling, ineffable, nocturnal, sweet, breather of fire, foam of the sea! Thou who accordest grace in secret, thou who unitest, thou who lovest, thou who seizest with furious desire the multiplied races of savage beasts and couplest the sexes in the wood. Oh, irresistible Astarte! hear me, take me, possess me, oh, Moon! and thirteen times each year draw from my womb the sweet libation of my blood!
- "Atheist Delivers Invocation At Tulsa City Council Meeting For First Time Ever". KOTV.com. Aug 30, 2012.
- Lyz (12/15/2009 - 10:08). "Andrew Lovley's Secular Invocation". Secular Students Alliance.
- Aleister Crowley, Magick, Book 4, p.147
- Beckwith, Carol (August 1995). The African Roots of Voodoo. National Geographic 188.2. pp. 102–113.
- Robert J Wallis, Shamans/Neo-Shamans: Ecstasies, Alternative Archaeologies and Contemporary Pagans, p.96 ISBN 0-415-30202-1
- Charles Godfrey Leland, Aradia, or the Gospel of the Witches, Chapter 2
- From the Songs of Bilitis
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- Supplication from the Quran and the Sunnah
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