'Years' in the Bible

Later, when Hezron was sixty years old, he married the daughter of Machir the father of Gilead, and she bore him Segub.

These six were born to David in Hebron; he reigned there seven years and six months, and in Jerusalem he reigned thirty-three years.

Now these are those whom David appointed over the service of song in the house of the Lord after the ark [of the covenant] rested there.

Then all Israel gathered to David at Hebron, saying, “Behold, we are your bone and your flesh.

either three years of famine, or three months to be swept away before your enemies, while the sword of your enemies overtakes you, or else three days of the sword of the Lord and plague in the land, and the angel of the Lord bringing destruction throughout all the territory of Israel.’ Now therefore, consider what answer I shall return to Him who sent me.”

The Levites thirty years old and upward were counted, and their number man by man was 38,000.

These were the Levites by their fathers’ households, the heads of the fathers’ households of those registered, according to the number of names of the individuals who were the servants of the house of the Lord, from twenty years old and upward.

For by the last words of David, the Levites from twenty years old and above were counted.

But David did not count those twenty years of age and under, for the Lord had said he would multiply Israel as the stars of heaven.

The time that he reigned over Israel was forty years; he reigned seven years in Hebron and thirty-three years in Jerusalem.