When I started studying the Bible seriously I realized that utilizing Jewish commentaries could be very helpful. Studying Christian commentaries on the OT was helpful because they understood the whole picture and how Christ should be read "back into" the OT. But the Jewish commentaries, though they do not acknowledge Jesus as the Messiah, do have marvelous insights and understanding of their own Hebrew Bible.
I am writing the 400+ plus page Bible Study on Genesis for www.CatholicScriptureStudy.com with well over 10,000 members in 40 countries and growing. I am using our exclusive Logos Bible Study Software for Catholics (link to our site at www.BibleTheology.com) along with many good commentaries including about eight different volumes by Jewish authors. Some of them were written almost 1,000 years ago.
If you like studying the OT I would highly recommend the JPS Jewish Commentary series. If you click here you will see the volume on Genesis written by Nahum M. Sarna on Amazon.com. From this link you can also see all the other volumes in the series. Click here to see the electronic version from Logos which you can buy from us cheaper than from Logos. I first discovered this JPS series in the Jewish Quarter in the Old City of Jerusalem and have been blessed ever since.
Thes electronic version of these commentaries in the JPS series will work seamlessly in our Logos Bible Software for Catholics. Contact me at email@example.com if you have any questions. I highly recommend these commentaries.