'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 Jehovah remained in the house of Obed-edom the Gittite three months: and Jehovah blessed Obed-edom, and all his house.

So when they had gone to and from 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 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.