Thus Noah did; according to all that God had commanded him, so he did. (Genesis 6:22)How easy it would be to skip over this verse without realizing its importance! It's one thing to listen to what God says, but it's quite another thing to do what God says. Cain heard the words which God spoke, but he refused to submit to them. What a great difference there is in Noah's example! What a great difference there is between a man who despises God and a man who finds favor with God! Noah both listened to God's instruction and followed it. Noah was obedient to God.
Noah's obedience is even more incredible in light of the massive tasks which God had instructed him to carry out. Noah had roughly 120 years to build an enormous ark. And while this certainly was a large chunk of time, Noah needed it. Scripture seems to indicate that Noah received little help in its construction:
By faith Noah, being warned by God about things not yet seen, in reverence prepared an ark for the salvation of his household, by which he condemned the world, and became an heir of the righteousness which is according to faith. (Hebrews 11:7)In building the ark, Noah condemned the world. And why would the wicked men of the pre-flood world want to play any significant role in the building of a vessel of condemnation? Darkness does not aid light. Noah must have done much of the work alone. Even more amazing, he did it at 480 years of age!
At the age of 480 years, Noah seems to have been fully capable of building an ark. Help, however, was on the way. Around the age of 500, Noah became the father of three sons: Shem, Ham, and Japheth. These sons, once they were fully grown, must have been a great help in the construction of the ark.
Noah did more than listen to God's words, but he was obedient to God's words. He built the ark according to God's dimensions. He assembled the animals. He gathered the food. And he preached. He was a preacher of righteousness (2 Peter 2:5). And by constructing the ark, he condemned the pre-flood world, which was so close to its coming destruction.
The Time Comes to Enter the Ark (Part 1) - Genesis 7:1
Summary of Genesis 6
Did Noah Gather "Vegetarian" Food? - Genesis 6:21
Matthew 1:24-25 - Joseph's Obedience and Jesus' Birth
State Of The World (2469 BC): 120 Years Before The Flood - Genesis 6:3