Daniel 1:9

5 The king assigned them daily provisions of the royal food and wine. They were to be trained for three years, after which they were to enter the king’s service.

6 Among these young men were some from Judah: Daniel, Hananiah, Mishael, and Azariah.

7 The chief official gave them new names: To Daniel he gave the name Belteshazzar; to Hananiah, Shadrach; to Mishael, Meshach; and to Azariah, Abednego.

8 But Daniel made up his mind that he would not defile himself with the king’s food or wine. So he asked the chief official for permission not to defile himself.

9 Now God had granted Daniel favor and compassion from the chief official,

10 but he said to Daniel, “I fear my lord the king, who has assigned your food and drink. For why should he see your faces looking thinner than those of the other young men your age? You would endanger my head before the king!”

11 Then Daniel said to the steward whom the chief official had appointed over Daniel, Hananiah, Mishael, and Azariah,

12 “Please test your servants for ten days. Let us be given only vegetables to eat and water to drink.

13 Then compare our appearances with those of the young men who are eating the royal food, and deal with your servants according to what you see.”

Read all of Daniel 1