'Young' in the Bible

Young men who were strong and healthy, good-looking, and trained in all wisdom, having a good education and much knowledge, and able to take positions in the king's house; and to have them trained in the writing and language of the Chaldaeans.

And the captain of the unsexed servants said to Daniel, I am in fear of my lord the king, who has given orders about your food and your drink; what if he sees you looking less happy than the other young men of your generation? then you would have put my head in danger from the king.

Then take a look at our faces and the faces of the young men who have food from the king's table; and, having seen them, do to your servants as it seems right to you.

And at the end of ten days their faces seemed fairer and they were fatter in flesh than all the young men who had their food from the king's table.

Now as for these four young men, God gave them knowledge and made them expert in all book-learning and wisdom: and Daniel was wise in all visions and dreams.

But keep its broken end and its roots still in the earth, even with a band of iron and brass; let him have the young grass of the field for food, and let him be wet with the dew of heaven, and let his part be with the beasts.