यो मां पश्यति सर्वत्र सर्वत्र सर्वं च मयि पश्यति।
Translation by Srila Prabhupada : To one who sees Me everywhere and everything in Me, I am never invisible, nor is he invisible to Me.
Meaning: A person in Krishna consciousness sees Lord Krishna everywhere, and sees all things in Krishna. Such a person may appear to see separate manifestations of nature, but he is in every condition aware of Krishna consciousness, that everything is a manifestation of the energy of Krishna.
The very principle of Krishna consciousness is that there is no existence without Krishna, and that Krishna is the Supreme Lord. Krishna consciousness is the development of love of Krishna—a state that is beyond even material liberation.
In this stage of Krishna consciousness above Self-realization, the devotee becomes one with Krishna in the sense that Krishna becomes everything to him and the devotee is filled with the loving Krishna. Then an intimate relationship is established between the Lord and the devotee.
In that stage the soul cannot be destroyed nor does the Lord disappear from the devotee's sight. Identification with Krishna is spiritual dissolution. The devotee never faces such a calamity.
It is stated in Brahmasamhita –
Premanjanachchhurit Bhaktivilochnanen
Saint: Always Hridayeshu Vilokayanti.
Yam Shyamsundaramchintyagunaswaroopam
Govindmaadipurusham tamham bhajaami.
"I worship the primeval Lord Govinda, Whom devotees see with eyes smeared with the collyrium of love. He is seen as Shyamsundar situated in the heart of the devotee."
In this state, neither Lord Krishna is out of sight of His devotee, nor the devotee is out of His sight. The same is true for the yogi, because he continues to see the Lord as the Supersoul within his heart. Such a yogi becomes a pure devotee, and cannot live a single moment without seeing the Lord within himself.
From this verse of the Bhagavadgita, we have to understand that a person in Krishna consciousness sees the Lord everywhere, and sees all things in Krishna. Here the Lord says that to anyone who sees Me everywhere and sees everything in Me, the Lord is never invisible, nor is that person invisible to Him. That is, a person in Krishna consciousness considers Krishna as his all and all, he sees Krishna in everything and Krishna is everything to him. Krishna is not forgotten in his heart for even a moment, that is, he cannot live even for a moment without remembering Krishna. In this state neither the Lord disappears from the devotee's sight nor the devotee disappears from the Lord's sight.
The same thing is said for a yogi also, that if someone is a true yogi he always sees the Lord within himself. Such a yogi becomes a pure devotee of the Lord and he cannot live even for a moment without seeing the Lord.