Matthew Poole and continuators on Genesis 12:18

18. And Pharaoh called Abram, and said, What is this that thou hast done unto me? Why didst thou not tell me that she was thy wife ?

How great an injury hast thou done to me in concealing this from me that she was thy Wife? How knew Pharaoh this? Ans. 1. He guessed it from the quality of his plague; which also awakened his Conscience. 2. Upon a serious enquiry into the cause of this plague, he understood it either by divine instinct, as Gen. 20. 3. or by Sarai's confession, whom doubtless he severely examined about it. And she, being awakened by this warning, durst no longer conceal her self, and thought she might securely make her self known.