That obedience is a key part of the story here, as the flood begins. At the very beginning of this chapter, Noah is given the command by God to board the ark.

In the selfsame day entered Noah, and Shem, and Ham, and Japheth, the sons of Noah, and Noah's wife, and the three wives of his sons with them, into the ark.

In the selfsame day entered Noah, and Shem, and Ham, and Japheth, the sons of Noah. That is, on the seventeenth day of the second month.

The flood was a cataclysmic event in which God chose to wipe out all living creatures from the face of the earth, with the exception of those saved in the ark.

On this very same day Noah, Shem, Ham, and Japheth, the sons of Noah, and Noah's wife and the three wives of his sons with them, entered the ark. Bridgeway Bible Commentary · Smith's Bible Commentary

This verse shows us that God's love is expressed in His desire to save. Even in the midst of judgment, God provided a way for Noah and his family to be saved.

“God closed the ark of Noah from without.” You should not imagine that the unbegotten God himself descended or ascended from any place. For the ineffable Father ...

19 июл. 2021 г. · Verse 13 says “on the very same day” that the rain began to fall on the earth, Noah and his family entered the ark. Everyone came through the ...

It emphasizes the significance of community in God's plan, as each member of Noah's family, as well as every animal, enters the ark to escape the floodwaters.

David Guzik commentary on Genesis 7 describes the final preparation of Noah, and God's judgment of the world through a flood.