This week on the Extras, Mike, Jack and Sam answer your questions on Genesis 20-21

We're answering:

- Is it ok that Sarah is actually Abraham's sister?

- Why isn't Ishmael ever named in chapter 21?

- 1 Chronicles 1 talks about lots of other descendants of Abraham - who are Abraham's descendants?

- What ends up happening to the Ishmaelites? Are they the Arab people?

And more!