Daniel 1:6-15

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. Now God made Daniel to find kindness and compassion in the sight of the prince of the eunuchs. And the prince of the eunuchs said unto Daniel, I fear my lord the king, who hath appointed your food and your drink: for why should he see your faces worse looking than the youths that are of your own age? so would ye endanger my head with the king. Then said Daniel to the steward whom the prince of the eunuchs had appointed over Daniel, Hananiah, Mishael, and Azariah: Prove thy servants, I beseech thee, ten days; and let them give us pulse to eat, and water to drink. Then let our countenances be looked upon before thee, and the countenance of the youths that eat of the king’s dainties; and as thou seest, deal with thy servants. So he hearkened unto them in this matter, and proved them ten days. And at the end of ten days their countenances appeared fairer, and they were fatter in flesh, than all the youths that did eat of the king’s dainties.