Bg 6.30

yo mam pasyati sarvatra
sarvam ca mayi pasyati
tasyaham na pranasyami
sa ca me na pranasyati

Word for word: 
yah — whoever; mam — Me; pasyati — sees; sarvatra — everywhere; sarvam — everything; ca — and; mayi — in Me; pasyati — sees; tasya — for him; aham — I; na — not; pranasyami — am lost; sah — he; ca — also; me — to Me; na — nor; pranasyati — is lost.

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
For one who sees Me everywhere and sees everything in Me, I am never lost, nor is he ever lost to Me.

Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
A person in Krishna consciousness certainly sees Lord Krishna everywhere, and he sees everything in Krishna. Such a person may appear to see all separate manifestations of the material nature, but in each and every instance he is conscious of Krishna, knowing that everything is a manifestation of Krishna’s energy. Nothing can exist without Krishna, and Krishna is the Lord of everything – this is the basic principle of Krishna consciousness. Krishna consciousness is the development of love of Krishna – a position transcendental even to material liberation. At this stage of Krishna consciousness, beyond self-realization, the devotee becomes one with Krishna in the sense that Krishna becomes everything for the devotee and the devotee becomes full in loving Krishna. An intimate relationship between the Lord and the devotee then exists. In that stage, the living entity can never be annihilated, nor is the Personality of Godhead ever out of the sight of the devotee. To merge in Krishna is spiritual annihilation. A devotee takes no such risk. It is stated in the Brahma-samhita (5.38):

premanjana-cchurita-bhakti-vilocanena
santah sadaiva hrdayesu vilokayanti
yam syamasundaram acintya-guna-svarupam
govindam adi-purusam tam aham bhajami

“I worship the primeval Lord, Govinda, who is always seen by the devotee whose eyes are anointed with the pulp of love. He is seen in His eternal form of Syamasundara, situated within the heart of the devotee.”

At this stage, Lord Krishna never disappears from the sight of the devotee, nor does the devotee ever lose sight of the Lord. In the case of a yogi who sees the Lord as Paramatma within the heart, the same applies. Such a yogi turns into a pure devotee and cannot bear to live for a moment without seeing the Lord within himself.