Spirit energy
The "animating" principle / God/ Spirit breath Pneuma is within Sentient beings ; The Animator is perceived generally as Eternal, Life giving and Conscience : Focus upon Within renders Truths, Consciousness that is Tranquility Permanent and it's Qualities of Vairaagya ( Non sensual ) and Shudhdh gyaan ( pure knowledge).
The Animator is considered SelfExistent Energy since no external Corporeal element ( fire, water, wind, mud eathiness, aether) is able to replace it nor have Life Existence without it.
Because God is Life principle Source , the spirits souls of beings ( having emerged from God) can never 'die/ cease to exist': they continue to Exist in Heaven or its opposite realm , after physicality death of beings, based upon their Choices, and where applicable, as were Created as Innocent beings.