How are Judaism, Christianity, and Islam all connected through the original covenant?

How are Judaism, Christianity, and Islam all connected through the original covenant that the Jewish patriarch Abraham made with God?

Comparison between islam and Christianity and Judaism

http://www.religionfacts.com/islam/comparison_charts/islam_judaism_christianity.htm

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Understand ISlam

http://www.imanway.com/vb/showthread.php?p=1655

Islam, the Religion of Ease

http://www.freewebs.com/katab/4th.htm

Beliefs of Islam

http://www.islamreligion.com/category/48/

ISLAM and the AIM of LIFE

http://www.freewebs.com/katab/3rd.htm

Merits Of Islam

http://www.Islamqa.com/en/ref/219/muslim%20treatment%20towards%20non%20muslims

beauties of islam

http://www.youtube.com/view_play_list?p=E503C0955218CE78&search_query=beauties+of+islam

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