The theme of oneness of the numerous forms of life has also been stressed in shloka 6.29 wherein it is stated that he whose self is disciplined in yoga (yog-yukt-atman), sees the self abiding in all beings and all beings existing in the self ; everywhere he sees the same.
To put it simply, when enlightened by yoga, one understands that the same Atman, consciousness, dwells in him and in everyone else. He also realises that everyone is situated in the same Atman. The perception of a separate finite being having its own weaknesses then vanishes. He establishes his oneness with all life.
Not only oneness of the whole flow of life, Krishna has also revealed the unity of all existences. In the very next shloka i.e. in shloka 6.30, it has been stated that he who sees the Supreme Lord everywhere and sees everything in Him, he never loses sight of the Supreme nor is he ever out of His sight.
This shloka emphasises on the profound unity of everything in the all-pervading Ishvara. He remains established in the hearts of those who realise their oneness with Him.
Knowledge about the unity of all beings has been declared to be the true knowledge. It has been stated in shloka 18.20 that the knowledge by which all beings, of goodness (sattvic gyana).
Such knowledge leads to the realisation that the indivisible spirit which dwells in all living beings is imperishable.The indivisible and imperishable spirit is the essential truth of everyone. One,.