מדרש על סוכה 5:1

Rabbi Simeon said: Owing to the power of || charity the dead will be quickened in the future. Whence do we learn this? From Elijah the Tishbite. For he betook himself to Zarephath, and a woman (who was) a widow received him with great honour. She was the mother of Jonah, and they were eating and drinking his bread and oil; he, she, and her son, as it is said, "And she did eat, and he also" (1 Kings 17:15).