Invocation

Invocation is the act of "calling in" a spirit or deity. This is different than EvocationEvocation
The "Evoking" or summoning forth of spirits or entities. Typically involves the appearance of the desired entity in the material plane but can also be a "feeling" or "hearing" of the entity.
which typically involves "summoning" a spirit or entity to appear in an external form to do work or answer questions.

Under some modalities this is another form of servitor creation that creates an aditional "Ego" that attaches to your own

-> Formal Invocation Style for Deity WorshipFormal Invocation Style for Deity Worship
According to Liber Astarte a proper invocation should have 7 parts


An Imprecation // said in Awe

like slave to lord


An oath // fealty

like vassal to liege
...


References

Invocation to Apollo

Orphic Hymn to Hekate

Peter Carroll, Liber NullPeter Carroll, Liber Null

Bluefluke, Psychonaut Field ManualBluefluke, Psychonaut Field Manual
A plain language compedium that seeks to broadly survey many magical topics. Geared toward the absolute beginner. Takes a strong stance on a "brain first"/psychological model of magic.

Hand of Eri...