2 Kings 4:39-40

39One of the young men went out into the field to gather herbs and came back with a pocketful of wild gourds. He shredded them and put them into the pot without realizing they were poisonous.

40Some of the stew was served to the men. But after they had eaten a bite or two they cried out, “Man of God, there’s poison in this stew!” So they would not eat it.