Abimelech tries to marry Sarah
Abimelech took Sarah because Abraham said she was his sister. God came to him in a dream and told him the truth. Abimelech returned her.
Key passages
Ge 20:1–18

And Abraham journeyed from there to the land of the Negev, and he settled between Kadesh and Shur. And he dwelled as an alien in Gerar. And Abraham said about Sarah his wife, “She is my sister.” And Abimelech king of Gerar sent and took Sarah. And God came to Abimelech …

See also