Supremacy of Krishna
Lord Shri Krishna is the Supreme Personality of Godhead, and it is confirmed by all the great acharyas (spiritual masters) like Shankaracharya, Ramanujacarya, Madhvacharya, Nimbarka Swami, Chaitanya Mahaprabhu and many other authorities of Vedic knowledge in India. Lord Shri Krishna also establishes Himself as the Supreme Personality of Godhead in the Bhagavad gita, and He is accepted as such in the Brahma-samhita and all the Puranas, and especially in the Bhagavata Purana also known as the Shrimad-Bhagavatam. In Bhagavad gita (7.14) it is said, daivi hy esa guna-mayi mama maya duratyaya: the living entities are all entangled in the three modes of material nature. The external energy of the Lord is very strong, but the Lord, as the master of the three modes of material nature, is ever liberated from the action and reaction of those modes. He, therefore, is uncontaminated, as stated in the Isopanishad. The contamination of the material world does not affect the Supreme Godhead.
Real supremacy belongs to Krishna. Krishnas tu bhagavan svayam (SB 1.3.28) is the statement of Shrimad-Bhagavatam: “Krishna is the only Supreme Lord.” Worship of Krishna alone, therefore, includes worship of all the parts and parcels, just as watering the root of a tree also waters all the branches, twigs, leaves and flowers. The Lord is eternally liberated. Whenever He appears, even within this material world, He is never entangled by the three modes of material nature. He is known, therefore, as try-adhisa, the master of the three modes of material nature. As Lord Krishna says, mayadhyaksena prakrtih suyate sa-caracaram: “This material nature is working under My direction.” Material nature is not independent. She is acting under the directions of the Supreme Lord
The Vrindavana-lila of Krishna is the perfect presentation of the Supreme Personality of Godhead. We see how big demigods like Brahma, Indra are completely bewildered. They are sometimes mistaken, thinking that “How this cowherd boy can become the Supreme Personality of Godhead?” Just like some of us think that way. Although he’s engaged in pleasing the inhabitants of Vraja, but when there is need, He can lift up the Govardhana—at the age of seven years. Or He can kill the demoness Putana at the age of three months. So although Krishna is playing just like a cowherd boy, His supremacy as the Supreme Personality of Godhead is never absent there. That is God. God is not created by meditation. God is God. God is never manufactured. We should know this.
According to Vaishnava philosophy, Narayana cannot be equal to any one of us. What to speak of us, Narayana cannot be equally estimated even with great demigods like Lord Brahma and Lord Shiva. The Vaishnava Purana says, yas tu narayaana devam brahma-rudradi-daivataih, samatvenaiva vikseta sa pasandi bhavad dhruvam: (Cc. Madhya 18.116) “Anyone who calculates Narayana, the Supreme Personality of Godhead, equal with such demigods, what to speak of ordinary human beings, even big, big demigods like Lord Shiva, Lord Brahma, immediately becomes a pasandi, atheist.”
The materialists, who are after opulence and material prosperity, may take lessons from the Ramayanathat the policy of exploiting the nature of the Lord without acknowledging the supremacy of the Supreme Lord is the policy of Ravana. Ravana was very advanced materially, so much so 
that he turned his kingdom,Lanka, into pure gold, or full material wealth. But because he did not recognize the supremacy of Lord Ramachandra and defied Him by stealing His wife, Sita, Ravana was killed, and all his opulence and power were destroyed.
How can one truly understand the greatness of the Supreme Lord, we don’t have to look further than the Bhagavad gita, where Lord Krishna says that “That very ancient science of relationship with the Supreme is today told by Me to you because you are My devotee.” A devotee is one who accepts the supremacy of the Supreme Lord, and he is convinced about his eternal relationship with God.