Jewish Virtual Library: Isaac
- Brief profile of the Biblical patriarch.
- http://www.jewishvirtuallibrary.org/jsource/biography/isaac.html

Yitzchak: Too Good for Anywhere Else
- Rabbinic traditions about the patriarch.
- http://ohr.edu/tw/weinbach/loveland/pol008.htm

Concerning Isaac The Legitimate Son Of Abraham
- Chapter by the first-century Jewish historian Josephus.
- http://www.interhack.net/projects/library/antiquities-jews/b1c13.html

Isaac
- Profile of the son of Abraham from a joint Lutheran and Catholic bible study project.
- http://www.aboutbibleprophecy.com/p20.htm

The Blessings of Isaac
- A Jewish reinterpretation of the patriarch's intentions toward his sons.
- http://www.mesora.org/isaaacsblessings.html

Isaac and His Sons
- Jewish commentary on the true significance of the patriarch's deception by his less-favored son.
- http://www.aish.com/literacy/jewishhistory/Crash_Course_in_Jewish_History_Part_6_Isaac_and_His_Sons.asp

Jewish Encyclopedia: Isaac
- Overview of the patriarch from the traditional Jewish perspective, including apocrypha and Talmudic commentary.
- http://www.jewishencyclopedia.com/view.jsp?artid=174&letter=I

Catholic Encyclopedia: Isaac
- Commentary on the Biblical patriarch from the traditional Catholic perspective.
- http://www.newadvent.org/cathen/08175a.htm