When G-d informed Noah that he would flood the world because of the evil behavior of his generation, what was Noah's reaction? He built the Ark as instructed and if anyone were to ask he'd relay G-d's warning.
When G-d told Abraham that he would destroy Sodom and Amorah because of their evil ways, what was Abraham's reaction? He pleaded with G-d to find some merit to spare them.
This fact highlights the unique character of Abraham and what made him truly fitting to be the father of the future Jewish nation.
Abraham demonstrated that it was not enough to simply be concerned with doing what is right in our own lives, but to also look out and care for others, even if - as in the case of Sodom - they were not even deserving. It is precisely this type of selfless kindness that will ultimately help build a better world.

William Thompson wrote...
I had never thought about it this way before.. I had always took care of myself with little thought for others... You have opened my eyes to the fact that we must be our "brother's keeper"...