Great ! .. only Humans can reason ! and not any other animal
All living beings engage in 4 common activities
- Eating
- Mating
- Defending
- Sleeping
What Human has is the power to reason.
And that reasoning power is given to Man as per scriptures to ask questions like you are asking ... who am I ... who is God ...
First pls know that you are the Soul ! .. yes you are the Soul who is given Human body according to your good Karma in the past lives so that you get a platform to reason out abt yourself and God.