"All living beings are unmanifested in their beginning.
Manifested in their interim state.
And unmanifested again when annihilated.
So what need is there for lamentation?"
"While focusing on the objects of the senses, one develops attachment for them.
From such attachments, lust develops.
From lust, anger arises.
From anger, complete delusion arises.
From delusion Bewilderment of memory.
When memory is bewildered, intelligence is lost.
And when intelligence is lost, one falls down again in the pool of material existence"
"When your mind is no longer disturbed by the flowery language of the Vedas and when it remains fixed on self realization. Then you'll have attained divine consciousness"
"You have a right to perform your prescribed duty, but you're not entitled to the fruits of your actions.
Never consider yourself as the cause of the result of your activities and never be attached towards not doing your duty"
"Perform your duty equiposed oh, Arjuna....abandoning all attachments to success and failure. Such equanimity is called Yoga"
"The mind of the best of friends of the one who has controlled it, but for the one who has failed to do so, the mind will remain his greatest enemy"
"As a strong wind sweeps the boat in the water, similarly one of the roaming senses on which the mind develops can carry away the man's intelligence"
"The Brahman, the unmanifested is subservient to me and it is that Brahman that I impregnate making the possible for life"
"The soul can never be cut into pieces by any weapon, not moistened by water, nor burnt by fire nor withered by the wind.
This individual soul is unbreakable and insoluble and can be neither burnt nor dried.
He's ever existing, present everywhere, immovable and eternally the same"
These are some of the verses from the Bhagavad Gita that I believe in that are in touch with human consciousness.
But I do not believe
"Among the stars I m the moon"
"Among mountains I m Sumeru"
It doesn't ask for blind following of every word, but most of the words said by Krishna comes with "That is my opinion"
At the end Krishna asks Arjuna to Deliberate on his words fully and then do what he wishes.
So, even if it is a religion, it is not a stern dogma as the freedom to think on the words of the Gita and then follow or not follow in the words of Krishna has place here.
You may question that the Vishvaroopa (universal form of Krishna) which Arjuna saw might simply have been a delusion.
That comes only on your personal view. You can accept Vishvaroopa as a genuine universe when Arjuna saw all the universe inside the Body of Krishna or a silly edit by conservatives.
Also someone might say that Krishna says that Narayana is an Aditya and not the supreme consciousness.
On that I can only say that the Parabrahman is Krishna, though he's believed to be Narayana as well.
But to sum up:
1. Not a dogma but are opinions stated by Krishna (most of them) so more of a guide to a way of life.
2. Krishna is the Parabrahman or the creAtive energy and through Narayana, he came to be in the material form as Narayana is the protector and maintainer of the cosmos.
3. You are expected to think the beliefs of Krishna trough and then act on your duty.
4. It is not of any religion
"Abandon all varieties of religion and just surrender yourself to me".
Krishna (as I take it in my view) is the entire cosmos as displayed in his Vishvaroopa, beyond planets, religions and genders.
5. Though a part of Bhishma Parva of Mahabharata, Mahabharata I personally use as a reference book and not as a main text.
6. My religion also includes Buddhism and Taoism which do not contradict each other very much.
7. So, my "religion" cannot be proven as it is devoid of all possible labels that the west has conjured up for their religions and beliefs.
The only way to see its evidence is to practice it.