This happened to us. It sold a month later and the buyer wanted a few things fixed. Luckily a friend was willing to take care of those for us since we were 10hrs away. Praying that you get lucky and won’t have to return.

The Bible Project did a book on heaven, mainly the old testament view. It has some interesting details that have changed how I understand old testament teaching. The book is free. They have a PDF link on their Amazon page for the physical book.