Eric A. Kimmel 
Escape from Egypt [PDF ebook] 

One minute, twins Scarlett and Sam are bickering about who’s going to read the Four Questions at the Passover seder. The next minute, they’ve been swept up by Grandma Mina’s time-traveling carpet and dumped in the ancient Egyptian desert! And as if being stranded 3, 000 years in the past isn’t bad enough, they also find their fellow Hebrews suffering in slavery. So they team up with Moses, Aaron, and Miriam to help free the slaves. The future’s looking bright! But the story they know so well doesn’t turn out the way they expected…