Answer: The term KRShNa loka to characterize the Nondual state is a contradiction in terms, like the horn of a hare, or the son of a barren woman. Nowhere in the Bhagavad GItA, which is the word of SrI KRShNa Himself, is there any mention of KRShNa loka. Nor is any mention of this to be found in the Vedas or Upanishads either. Such a statement cannot come from either a mind that has had direct experience of the Nondual state that is the source of the Vedas, nor can it come from a mind that has studied the Bhagavad GItA, Upanishads or Vedas.
The word loka in Sanskrit cannot admit a Nondual experience, being as loka is an object of perception.
If one were to attain mergence with KRShNa, then that mind is KRShNa, the act of knowing is KRShNa and the object of knowing is KRShNa. What world or loka will be left to be perceived in that state of samAdhi?
If all is indeed KRShNa, then what need is there for that name? The name exists only in the realm of the mind, for direct experience in meditation validates the Upanishadic statement (Chand. Up.) that the mind is nothing but speech and form.
Does anyone wake up every day and say "I am so and so?" There is no need to affirm one's existence in this way! So too it is with the Self. The Self does not need a Name. The Name is important in a certain stage of practice to fix the mind. Once the mind dissolves in the Name it must then transcend name and form. So the name is secondary once the Nameless has been known.
The discriminating mind chooses Limitlessness over limitations. Viveka (or discrimination) must be cultivated at all stages. Arguments must be weighed and a highly advanced intellect is needed to tread the path of jnAna and discriminate between the true and the false. This viveka when cultivated to its culminating point is able to discriminate between the Real that is Eternal and the transient that is composed of name and form.
Name and form creates distinction and separateness or duality. It cannot exist in Nondual experience.
Objection: Yet, even in the devi kavacam there is reference in the end to an abode of Shiva, vide
शिवलोकमवाप्नोति शिवेन सह मोदते
(The aspirant) attains the abode of Shiva and rejoices there with Shiva.
What should the aspirant make of this reference?
Answer: In the path of bhakti, different Names and Forms are assigned to the divinities in which the Nameless, Formless Self manifests. The intent is that by burning devotion to the इष्ट देवता (Chosen Ideal), the devotee merges into the Name and Form of the इष्ट देवता (Chosen Ideal). This is savikalpa samAdhi (see other posts on samAdhi and article on the sadhanaguidance website about the same). This is samAdhi with bIja (seed). The seed is the Name or the Form. Adoration of the Name or Form is a very good start to the practice or sAdhanA. However, after savikalpa samAdhi on Name and Form, the nirvikalpa samAdhi is to be practiced. That is meditation on the Formless and Nameless.
The very nature of thought, and the mind is nothing but thought, has been represented by the TrimUrti (the Vedic Trinity) of Brahma, ViShNu and Shiva. Brahma is the emergence of thought (and hence the Creation of all worlds) and is associated with Rajas. ViShNu is the sustenance of thought and the perception (and hence Sustenance of the worlds) and is associated with Sattva guNa. Shiva is the end of thought (and hence Destruction of the worlds) and is associated with Tamas.
However, the intelligent one will recognize that the word ViShNu actually means pervasion. Therefore ViShNu is simply the aspect of Consciousness when perceived by the mind as being All-pervading.
Similarly, Shiva means the Auspicious one, which is the auspicious aspect of Consciousness as perceived by the mind.
The beginner's mind associates very specific forms with these Personifications of the Self and thinks of them as different. In Devi worship, the Power of the One Consciousness as Shakti is conceived of as the very substratum of the three GuNas and therefore Brahma, ViShNu and Shiva are depicted as arising only from the Power of Devi.
Om tat sat
Krishnarpanamastu
Brahmarpanamastu