'Young' in the Bible

young men in whom there was no physical defect and who were handsome, well versed in all kinds of wisdom, well educated and having keen insight, and who were capable of entering the king's royal service -- and to teach them the literature and language of the Babylonians.

As it turned out, among these young men were some from Judah: Daniel, Hananiah, Mishael, and Azariah.

But he responded to Daniel, "I fear my master the king. He is the one who has decided your food and drink. What would happen if he saw that you looked malnourished in comparison to the other young men your age? If that happened, you would endanger my life with the king!"

Then compare our appearance with that of the young men who are eating the royal delicacies; deal with us in light of what you see."

At the end of the ten days their appearance was better and their bodies were healthier than all the young men who had been eating the royal delicacies.

Now as for these four young men, God endowed them with knowledge and skill in all sorts of literature and wisdom -- and Daniel had insight into all kinds of visions and dreams.