What does Genesis 20:10 mean?
Abraham's actions put the king and his family at risk—they were stricken with disease and barrenness (Genesis 20:17–18) until God confronted Abimelech in a dream (Genesis 20:3). At that point, Abimelech appealed to his good intentions, and that he had not yet touched Sarah. In the prior verse, Abimelech had demanded to know why Abraham had acted so inappropriately, by lying and allowing this risk to fall on his family.After beginning with an angry series of confrontational questions in the previous verse, Abimelech's question here seems more pointed. He genuinely wants to know why Abraham lied and said that Sarah was his sister. More specifically, Abimelech asks what Abraham has seen or encountered that would motivate this kind of deception. Abimelech honestly doesn't get it. In light of all of God's goodness to Abraham, his answer in the following verses will not be very satisfying to us either, though it will sound very human.