The point of this passage is that God is so great and so worthy of worship and trust and obedience that a single act of disobedience against him—a single bite of of a fruit—deserves to have the whole creation come crashing down in response.
When Satan slithers his way into your ear to feed you his lies and tempt you to fall into sin, counter him with the truth of God’s Word, like Adam and Eve failed to do, but just like Jesus did.
Eve was not exactly like Adam. God made a woman, not another man. But she was clearly the same kind of creation as he was. Someone with whom he could be fruitful and multiply; someone who was a suitable helper for him. And he rejoiced.
Genesis 1:1 does not say, “In the beginning, Adam was created by God.” Instead we're introduced to God, who speaks and acts and creates, and it’s not until further down in the chapter that humans show up. This is so important, because it tells us that we are not the main characters in this story. We’re the supporting characters. This story is about God.