Daniel 1:5-8

And the king appointed for them a daily portion of the king’s dainties, and of the wine which he drank, and that they should be nourished three years; that at the end thereof they should stand before the king. Now among these were, of the children of Judah, Daniel, Hananiah, Mishael, and Azariah. And the prince of the eunuchs gave names unto them: unto Daniel he gave the name of Belteshazzar; and to Hananiah, of Shadrach; and to Mishael, of Meshach; and to Azariah, of Abed-nego. But Daniel purposed in his heart that he would not defile himself with the king’s dainties, nor with the wine which he drank: therefore he requested of the prince of the eunuchs that he might not defile himself.