God doesn't understand the difference between a day and a thousand years? What will the new earth be like, (Advent 2 3-year B)

Does that verse in 2 Peter 3 mean that God just doesn't understand time? Is this why He was so confusing in describing the 400 million years in Genesis? Also, what will the new heavens and earth be like?

Finally, let's get into the texts and sermons for Advent 2 (3 year, B) and advent midweek for 2023!