Gen 26 - Did you know? Isaac feared for his life the same way Abraham did and he used the same lie.

Gen 26:7
When the men of the place asked about his wife, he said, "She is my sister," for he was afraid to say, "my wife," thinking, "the men of the place might kill me on account of Rebekah, for she is beautiful."

Isaac feared for his life in the same way Abraham did and he used the same lie Abraham did. He undoubtedly heard of his father saying the same thing.

Gen 26:8
And it came about, when he had been there a long time, that Abimelech king of the Philistines looked out through a window, and saw, and behold, Isaac was caressing his wife Rebekah.

Gen 26:9
Then Abimelech called Isaac and said, "Behold, certainly she is your wife! How then did you say, 'She is my sister'?" And Isaac said to him, "Because I said, 'Lest I die on account of her.'"

Gen 26:10
And Abimelech said, "What is this you have done to us? One of the people might easily have lain with your wife, and you would have brought guilt upon us."

What Isaac said was to protect him from the people of the land who would capture Rebekah and probably take her as a wife. But Abimelech heard of Abraham's story also and knew that they would be cursed if they took her.

Gen 26:11
So Abimelech charged all the people, saying, "He who touches this man or his wife shall surely be put to death."