'Old' in the Bible

And afterwards Hezron went to the daughter of Machir, the father of Gilead, and he took her when he was sixty years old; and she bore him Segub.

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

And the Levites were numbered from thirty years old and upward; and their number, by their polls, man by man, was thirty-eight thousand.

These were the sons of Levi according to their fathers' houses, the chief fathers, as they were reckoned, by number of names by their polls, who did the work of the service of the house of Jehovah, from twenty years old and upward.

For by the last words of David was this done, the numbering of the sons of Levi from twenty years old and upward.

And David took not their number from twenty years old and under; for Jehovah had said he would increase Israel as the stars of heaven.

And he died in a good old age, full of days, riches, and honour; and Solomon his son reigned in his stead.