From Moderne Graphik Zum Alten Testament

Sarah smiles from the window of her home when three angels swoop down to tell Abraham that they will have a son in a year (Genesis 18:10–11), as depicted in this German woodcut of the “Visit of the Three Angels” (1956) by Jochem Pechau. Once Sarah realizes that God is serious, however, she becomes frightened (Genesis 18:15), perhaps because she does not want to give birth at age 90.