Daniel 1:12-16

12“Please test your servants for ten days: Give us nothing but vegetables to eat and water to drink.

13Then compare our appearance with that of the young men who eat the royal food, and treat your servants in accordance with what you see.”

14So he agreed to this and tested them for ten days.

15At the end of the ten days they looked healthier and better nourished than any of the young men who ate the royal food.

16So the guard took away their choice food and the wine they were to drink and gave them vegetables instead.