The next stage of cognition of the depth of the multidimensional Absolute will be getting to know the subtlest Fiery Manifestation of the Creator.
God-the-Father manifests Himself like this when He enters His Creation. In this case, in particular, He appears before worthy disciples who attained proper refinement of consciousness in a gigantic anthropomorphic (human body like) Flaming form, which does not burn them.
In this Fiery Form Ishvara is also described in Bhagavad Gita  by Arjuna who saw Him like that:
"I behold Thee… blazing everywhere like burning fire and the burning Sun, hard to look at, and passing all measure" (Chapter 11:17) and
"If the radiance of a thousand Suns were to burst forth at once in the sky, that would be like the splendor of this Great Soul" (Chapter 11:12).
Chaytanya told us about this Fire: "Fire is a functional state of Consciousness that lives in the Chamber (i.e. the Abode of the Creator)".
Sathya Sai Baba told us the same: "Fire is not an independently existing state, but that State of Mine that those Who cognized Me can see, when I enter the world of Creation".
The total and steady submerging of consciousness of a spiritual devotee into the Divine Fire and mergence with Him lead to
"burning" of all negative remnants of karma. And "burning" the body through with this Fire results in the complete healing of the body.
We should learn to merge with this state of God, by filing His entire form with ourselves as spiritual hearts, in particular.
But God helps in this not everyone, but only His worthy disciples whom He selects.