John Dummelow's Commentary on the Bible - Genesis 17:1-27
The Covenant of CircumcisionThis chapter is from the Priestly document, of which it shows marked characteristics: see preface to Genesis 15.1. Ninety years old and nine] Ishmael was now thirteen years old, and Abraham probably expected no other heir. But his faith was to be put to a further test. The Almighty God] Heb. el Shaddai: the name of power shows the ability to perform what was promised. Walk before me, and be thou perfeet] i.e. always conscious of My presence, and living a pious,... read more
Expository Notes of Dr. Thomas Constable - Genesis 17:9-14
God wanted Abraham to circumcise his male servants as well as his children. The reason was that the Abrahamic Covenant would affect all who had a relationship with Abraham. Consequently they needed to bear the sign of that covenant. The person who refused circumcision was "cut off" from his people (Genesis 17:14) because by refusing it he was repudiating God’s promises to Abraham."This expression undoubtedly involves a wordplay on cut. He that is not himself cut (i.e., circumcised) will be cut... read more