'Months' in the Bible

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

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 the ark of the LORD continued in the house of Obededom the Gittite three months: and the LORD blessed Obededom, and all his household.

So when they had gone through all the land, they came to Jerusalem at the end of nine months and twenty days.

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 thine enemies, while they pursue thee? or that there be three days' pestilence in thy land? now advise, and see what answer I shall return to him that sent me.