I am in a big confusion, please correct me if I am wrong in some points.
Almost in every religion there are stories about catastrophic end of this world/universe.
In Hinduism it is believed that there is a catastrophic end at the end of each kalyuga of every mahayuga. That means there are 996 catastrophic happen in each day of Brahma. Also there are 14 manvantara in each day of Brahma and for every manvantara 1 Manu is assigned.
In my point of view assigning 1 Manu for 1 manvantra signifies starting of an entirely new world this clearly proves a catastrophic happens before the assignment of Manu.
Also after the passage of 996 mahayugas (1 kalpa) the whole universe is destroyed. And again recreation happens when Brahma ji awakes from his samadhi kala. This cycle goes on until the age of Brahma reaches to 100 years.
In Vishnu Purana it is written that at the beginning (satyuga) Brahma ji with 4 kumaras himself shared the knowledge of vedas.
I want to ask the meaning of beginning here, is it satyuga of first mahayuga of this kalpa? or it is satyuga of this current mahayuga?, or it is first satyuga of each manvantra?
In sort I want to ask, when actually Brahma ji shares Vedas? Beginning of mahayuga or manvantra or kalpa? The Vedas we are reading today is an outcome of how many catastrophic?