9 Abram kept moving, steadily making his way south, to the Negev.

10-13 Then a famine came to the land. Abram went down to Egypt to live; it was a hard famine. As he drew near to Egypt, he said to his wife, Sarai, “Look. We both know that you’re a beautiful woman. When the Egyptians see you they’re going to say, ‘Aha! That’s his wife!’ and kill me. But they’ll let you live. Do me a favor: tell them you’re my sister. Because of you, they’ll welcome me and let me live.”
Genesis 12:9-13, The Message

So, Abram was a “hero of faith,” but his faith seemed to have been buried deeply by fear. So, instead, Sarai has a real ordeal ahead of her. It’s hard for me to comprehend.