'Young' in the Bible

and Zadok, a young man mighty of valor, and of his father's house twenty-two captains.

David said, "Solomon my son is young and tender, and the house that is to be built for Yahweh must be exceedingly magnificent, of fame and of glory throughout all countries. I will therefore make preparation for it." So David prepared abundantly before his death.

David the king said to all the assembly, "Solomon my son, whom alone God has chosen, is yet young and tender, and the work is great; for the palace is not for man, but for Yahweh God.