For behold, I will bring a flood of waters upon the earth to destroy all flesh in which is the breath of life under heaven. Everything that is on the earth shall die. But I will establish my covenant with you Noah, and you shall come into the ark, you and your family. And of every living thing of all flesh, you shall bring two of every sort into the ark to keep them alive with you. Noah did this; he did all that God commanded him.
To recap for our friend Noah - God is going to destroy all of humanity, except you. The future of all life on Earth has been set entirely on your shoulders.
Imagine the strain of such responsibility. Imagine what it must have been like to shut the ark door on your fellow man, as the flood waves crashed over them. To hear their screams as they are washed away, while only you and your family survive. We know how the story goes - Noah obeys God, building the ark and gathering the animals to survive the worldwide deluge. But in that obedience, Noah must have been one emotionally conflicted guy.
The Bible doesn't provide details about how Noah and his family felt about the Great Flood, but director Darren Aronofsky (Black Swan) attempts to explore this oft-unthought of aspect of the famous Genesis story with mixed, but largely successful results in the new film Noah.