Even in these ordinary dealing, if I send some representative, if he signs something on my behalf, I have to accept that, because he is my representative. Similarly, God has to be approached through God or through His representative. The same thing. Only the difference may be of understanding.
Because Lord Jesus Christ spoke to a society that was not very much advanced. You can understand that such a great personality, God conscious person, was crucified. Just see the condition of the society. In other words, they were low-grade society. So they were not able to understand the whole philosophy of God.
That is sufficient, "God created. Just take it." They were not intelligent to understand how the creation took place. Had they been intelligent, they would not have crucified such a great personality like Jesus Christ.
So we have to understand what is the condition of the society. Just like in the Koran it is said by Muhammad that, "From this day you have no sex intercourse with your mother." Just find out the condition of the society. So we have to take account of the time, circumstances, society, and then preaching. So to society like that, it is not possible to understand the high philosophical things as it is stated in the Bhagavad-gītā.
But the primary fact, the authority is God, that is accepted both in Bible and Bhagavad-gītā. The Bible begins, "God is the supreme authority," and Bhagavad-gītā concludes, "You surrender." Where is the difference? Simply the description is according to the time, society and place and people. That's all. They are not Arjuna. You see?