Fish in river

My abode's not silent, but I am not loud-mouthed.

The Lord Almighty laid down laws

For both of us together. I am swifter than him who harbours me

And sometimes stronger too, he must strive more potently.

At times I just relax, while he must needs run onward.

But I live in him all the days of my life:

If we're ever divided, my destiny is death.

And the answer: Fish in River.