Daniel 1:5-8

The king assigned them a daily ration of food and wine from his own kitchens. They were to be trained for three years, and then they would enter the royal service. Daniel, Hananiah, Mishael, and Azariah were four of the young men chosen, all from the tribe of Judah. The chief of staff renamed them with these Babylonian names: Daniel was called Belteshazzar. Hananiah was called Shadrach. Mishael was called Meshach. Azariah was called Abednego. But Daniel was determined not to defile himself by eating the food and wine given to them by the king. He asked the chief of staff for permission not to eat these unacceptable foods.