Kṛṣṇa is the Supreme Personality of Godhead, and one should always meditate upon Him and enjoy one’s transcendental relationship with Him. He is the supreme existence…He is the supreme origin; He has no cause, for He is the cause of all causes, and everything is emanating from Him. This perfect knowledge can be had by the grace of the Supreme Lord.
Bhagavad-gita As It Is – Macmillan 1972 Edition
By His Divine Grace A.C. Bhaktivedanta Swami Prabhupada
Chapter 10 The Opulence of the Absolute
Text 12-14
arjuna uvāca
paraṁ brahma paraṁ dhāma
pavitraṁ paramaṁ bhavān
puruṣaṁ śāśvataṁ divyam
ādi-devam ajaṁ vibhum
āhus tvām ṛṣayaḥ sarve
devarṣir nāradas tathā
asito devalo vyāsaḥ
svayaṁ caiva bravīṣi me
Arjuna said: You are the Supreme Brahman, the ultimate, the supreme abode and purifier, the Absolute Truth and the eternal divine person. You are the primal God, transcendental and original, and You are the unborn and all-pervading beauty. All the great sages such as Nārada, Asita, Devala, and Vyāsa proclaim this of You, and now You Yourself are declaring it to me.
PURPORT
In these two verses the Supreme Lord gives a chance to the modern philosopher, for here it is clear that the Supreme is different from the individual soul. Arjuna, after hearing the essential four verses of Bhagavad-gītā in this chapter, became completely free from all doubts and accepted Kṛṣṇa as the Supreme Personality of Godhead. He at once boldly declares, “You are Parambrahma, the Supreme Personality of Godhead.” And previously Kṛṣṇa states that He is the originator of everything and everyone. Every demigod and every human being is dependant on Him. Men and demigods, out of ignorance, think that they are absolute and independant of the Supreme Lord Kṛṣṇa. That ignorance is removed perfectly by the discharge of devotional service. This is already explained in the previous verse by the Lord. Now by His grace, Arjuna is accepting Him as the Supreme Truth, in concordance with the Vedic injunction. It is not because Kṛṣṇa is an intimate friend of Arjuna that he is flattering Him by calling Him the Supreme Personality of Godhead, the Absolute Truth. Whatever Arjuna says in these two verses is confirmed by Vedic truth. Vedic injunctions affirm that only one who takes to devotional service to the Supreme Lord can understand Him, whereas others cannot. Each and every word of this verse spoken by Arjuna is confirmed by Vedic injunction.