'Fourth' in the Bible

And the Lord said to Jehu, Because you have done well in doing what is right in my eyes and effecting all my purpose for the family of Ahab, your sons will be kings of Israel to the fourth generation.

This was what the Lord had said to Jehu, Your sons to the fourth generation will be kings of Israel. And so it came about.

Now in the fourth year of King Hezekiah, which was the seventh year of Hoshea, son of Elah, king of Israel, Shalmaneser, king of Assyria, came up against Samaria, shutting it in with his armies.

Now on the ninth day of the fourth month, the store of food in the town was almost gone, so that there was no food for the people of the land.