In India, and outside India, you will find many people who say — We do not believe Sri Krishna is Supreme Lord because He took birth and, therefore, He was a human being. He may have many powers, perhaps even superhuman powers. He may even be a great politician, a great diplomat. But He is still only a human being.
Even those who have gone through the Geeta may also speak like this. It is most astounding. When I ask them — Have you gone through the Geeta? The reply is — Oh, yes.
I ask them — How! If you have gone through the Geeta, then you should accept the teachings of the Geeta.
Supreme Lord Sri Krishna mentions in Sreemad Bhagwad Geeta (7.7) –There is nothing superior to Me.
With emphasis, Sri Krishna says that He is the Supreme Lord. We read the Geeta, but we do not believe the teachings of Supreme Lord Sri Krishna. Why is this? He also says in the Geeta (9.24) — I am the only Master and the only Enjoyer of all yajnas (sacrifices).
There are many verse in Sreemad Bhagwad Geeta substantiating Sri Krishna as Supreme Lord.
In the Geeta (10.8), He says — I am the cause of all creation, the origin of all the things.
In verse (14.27), He says — I am the cause of the impersonal formless God (Brahm). That impersonal, formless God is the halo of own light of Sri Krishna, emanating from Sri Krishna Himself. And so on.
Sri Krishna is the Supreme Lord. How can we know the Supreme Lord? Without His grace, no one can know Him.
The only way to get Him is to take absolute shelter at His Lotus Feet and to act according to His will. There is no other way to get Him except by means of exclusive, pure devotion.
Therefore, only those who have surrendered to Sri Krishna, who have access to the heart of Sri Krishna, can understand the implication and significance of His teachings and Sree Geeta.
— His Divine Grace Srila Bhakti Ballabh Tirtha Goswami Maharaj ji.