In this passage about the flood, it's notable that Noah never speaks, only God does. God speaks, God instructs, God brings the animals, God shuts the door of the ark (if Noah did it, perhaps he would've opened it to allow people inside when the waters started to rise and they started to panic). God takes full and absolute responsibility for the flood and the judgment it brought upon every single living person and animal on the planet. He also receives all the glory for His mercy displayed by rescuing the righteous remnant.
Just as Adam and Eve were the only ones to witness both the pre- and post-fall world, so Noah and his family were the only ones to witness the pre- and post-flood world. Here on the Prairies we've seen the ruin left behind after a spring flood, but I can only imagine the utter devastation left behind after a world-wide flood! It would certainly look nothing like the typical illustrations in our children's Bible storybooks with a rainbow over lush green meadows. It would have been another stark indication of the judgment and wrath of God, demonstrating exactly how seriously God takes sin, compared to how lightly we take it. No wonder Noah made a sacrifice to God, he knew full well that his sin and the sin of his family was also deserving of death, and that the only reason they weren't drowned was because of God's grace - unmerited favour.
Which is, of course, a reminder that the flood is indicative of the coming final judgment at the end of human history, as well as God's saving grace in providing us an ark of safety in Jesus Christ.
Tomorrow's Bible In a Year Passage passage: Genesis 10-12, Romans 4