'Old' in the Bible

And afterward Hezron went in to the daughter of Makir the father of Gilead. And he married her when he was sixty years old. And she bore Segub to him.

Now David [was] old and full of days. And he made Solomon his son king over Israel.

And the Levites thirty years old and above were counted, and their number according to their head count for the men [was] thirty-eight thousand.

These [were] the sons of Levi according to the house of their fathers, the heads of the {families}, according to their enrollment, by the number of the names, according to their head count, [who were to] do the work of the service of the house of Yahweh, from twenty years old and above.

For by the last words of David, they [are] the number of the sons of Levi, from twenty years old and above.

And David did not {take a census of those twenty years old or under} because Yahweh promised to make Israel more numerous than the stars of heaven.

And he died in a good old age, full of days, wealth, and honor. And Solomon his son reigned in his place.