'Old' in the Bible

Afterward Hezron went in to the daughter of Machir the father of Gilead, whom he married when he was sixty years old; and she bore him Segub.

Now when David reached old age, he made his son Solomon king over Israel.

The Levites were numbered from thirty years old and upward, and their number by census of men was 38,000.

These were the sons of Levi according to their fathers’ households, even the heads of the fathers’ households of those of them who were counted, in the number of names by their census, doing the work for the service of the house of the Lord, from twenty years old and upward.

For by the last words of David the sons of Levi were numbered from twenty years old and upward.

Then he died in a ripe old age, full of days, riches and honor; and his son Solomon reigned in his place.