Daniel 1:3-5

Then King Nebuchadnezzar ordered Ashpenaz, his chief officer, to bring some of the men of Judah into his palace. He wanted them to be from important families, including the family of the king of Judah. King Nebuchadnezzar wanted only young Israelite men who had nothing wrong with them. They were to be handsome and well educated, capable of learning and understanding, and able to serve in his palace. Ashpenaz was to teach them the language and writings of the Babylonians. The king gave the young men a certain amount of food and wine every day, just like the food he ate. The young men were to be trained for three years, and then they would become servants of the king of Babylon.