Noah and the Flood

You are Noah, a 600 year-old-man. You are happily married to a woman named Naameh and have 3 sons: Shem, Ham, and Japheth. One day, the Lord says to you, “I will destroy the world because humans are sinning too much and there is no good in their hearts.” He then goes on to tell you to build an ark and have two of every animal in it, along with his family. What do you do?