But here we go again.
"There was even Holy words about rivers flowing into oceans & how there is a thin line to seperate salty waters of the ocean from "sweet" water of the river. SUCH THINGS WAS SCIENTIFICALLY DISCOVERED IN THE PAST FEW YEARS."

I would suggest this has been known by all that lived near coasts, deltas etc since the dawn of homo sapiens.
Further research may have discovered new facts about this delineation in recent years but to claim the whole concept was unknown and only revealed in a holy book is to have made yourself an unquestioning recipient of religious propaganda.

But I guess the more faith you have in these things despite evidence to the contrary will be seen as more pious and rewarding in heaven.

I don't go to mythical places with strange men.
-- Douglas Adams, The Long Dark Tea-Time of the Soul.