John Dummelow's Commentary on the Bible - Genesis 20:1-18
Abraham at Gerar1. Abraham leaves Mamre (Hebron) for Gerar, SW. of Philistia. It seems from Genesis 21:34 that he remained in that district for some years. 2. She is my sister] Twenty years earlier Abraham had used the same device in Egypt and now again he incurs a rebuke from one outside the Covenant. See Genesis 12:11-20 and notes. Abimelech] perhaps, ’Molech is my father,’ in honour of the false god. Cp. Abijah, ’Jehovah is my father.’4. Wilt thou slay also a righteous nation] Abimelech’s... read more
Commentary Critical and Explanatory on the Whole Bible - Genesis 20:3
3. But God came to Abimelech in a dream—In early times a dream was often made the medium of communicating important truths; and this method was adopted for the preservation of Sarah. read more