'Years' in the Bible

Ish-bosheth, Saul's son, was forty years old when he began to reign over Israel, and he reigned two years. But the house of Judah followed David.

And the time that David was king in Hebron over the house of Judah was seven years and six months.

Now Jonathan, Saul's son, had a son that was lame of his feet. He was five years old when the tidings came of Saul and Jonathan out of Jezreel; and his nurse took him up, and fled: and it came to pass, as she made haste to flee, that he fell, and became lame. And his name was Mephibosheth.

David was thirty years old when he began to reign, and he reigned forty years.

In Hebron he reigned over Judah seven years and six months; and in Jerusalem he reigned thirty and three years over all Israel and Judah.

And it came to pass after two full years, that Absalom had sheep-shearers in Baal-hazor, which is beside Ephraim: and Absalom invited all the king's sons.

So Absalom fled, and went to Geshur, and was there three years.

And Absalom dwelt two full years in Jerusalem; and he saw not the king's face.

And it came to pass at the end of forty years, that Absalom said unto the king, I pray thee, let me go and pay my vow, which I have vowed unto Jehovah, in Hebron.

Now Barzillai was a very aged man, even fourscore years old: and he had provided the king with sustenance while he lay at Mahanaim; for he was a very great man.

And Barzillai said unto the king, How many are the days of the years of my life, that I should go up with the king unto Jerusalem?

I am this day fourscore years old: can I discern between good and bad? can thy servant taste what I eat or what I drink? can I hear any more the voice of singing men and singing women? wherefore then should thy servant be yet a burden unto my lord the king?

And there was a famine in the days of David three years, year after year; and David sought the face of Jehovah. And Jehovah said, It is for Saul, and for his bloody house, because he put to death the Gibeonites.

So Gad came to David, and told him, and said unto him, Shall seven years of famine come unto thee in thy land? or wilt thou flee three months before thy foes while they pursue thee? or shall there be three days pestilence in thy land? now advise thee, and consider what answer I shall return to him that sent me.