Hashem makes mistakes too.

We learned that G-d destroyed the world, but the interesting part is that he regretted it and vowed to never again destroy the world on account of an individual. Just like us, humans, make mistakes, so does the almighty G-d. I think this is an important lesson for us. Sometime we make mistake, but the important part of making mistakes, as we all know is to learn from them. G-d learned from them which is, in my opinion something he unintentionally or even more so indirectly wanted us to pick up on and actually participate in. So the lesson that I took out of the vow Hashem made to never destroy the world again on account of an individual is that even amazing, holy, almighty, all powerful people make mistakes but they always learn from them, as should we.