Daniel 1: Daniel Goes to Babylon and Joins the Public Service of a Wicked King - David Alley

Daniel, and his three friends Hananiah, Azariah and Mishael are among the earliest Jewish people taken into exile in Babylon. They are presumably castrated and put into the public service under the watchful eye of Ashpenaz the caretaker of the eunuchs. While in Babylon Daniel is renamed after a foreign god, taughter a foreign way of life and language, and is surrounded by worldliness. How does he maintain his faith, while maintaining friendliness and kindness to those wanting him to change?