Daniel 1:5

And the king appointed them, namely, for those who were to be selected, a daily provision of the king's meat, of the food which was served on his own tables, and of the wine which he drank, literally, "of the wine of his drinking," or "banqueting," so nourishing them three years, their education and their physical development going hand in hand, that at the end thereof they might stand before the king, fully equipped for his service as courtiers and advisers, or in whatever capacity he might choose to use them.